Home / 1,673.28-2,309.16-974.72

Finding the Fourth Proportional to 1,673.28, 2,309.16 and 974.72

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Solution

The fourth proportional to 1,673.28, 2,309.16 and 974.72 is: 1,345.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,673.28 : 2,309.16 = 974.72 : x
  2. Step 2: Convert to fraction form
    1,673.28/2,309.16 = 974.72/x
  3. Step 3: Cross multiply
    1,673.28x = 2,309.16 × 974.72
  4. Step 4: Simplify right side
    1,673.28x = 2,250,784.44
  5. Step 5: Solve for x
    x = 2,250,784.44/1,673.28
  6. Step 6: Final answer
    x = 1,345.13

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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.