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Finding the Fourth Proportional to 1,673.16, 2,309.22 and 974.76

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Solution

The fourth proportional to 1,673.16, 2,309.22 and 974.76 is: 1,345.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,673.16 : 2,309.22 = 974.76 : x
  2. Step 2: Convert to fraction form
    1,673.16/2,309.22 = 974.76/x
  3. Step 3: Cross multiply
    1,673.16x = 2,309.22 × 974.76
  4. Step 4: Simplify right side
    1,673.16x = 2,250,935.29
  5. Step 5: Solve for x
    x = 2,250,935.29/1,673.16
  6. Step 6: Final answer
    x = 1,345.32

Related Problems

Find fourth proportional to 836.58, 1,154.61 and 487.38
Half scale
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Double scale
Find fourth proportional to 1,674.16, 2,310.60 and 975.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.