Home / 1,638.27-2,260.83-975.19

Finding the Fourth Proportional to 1,638.27, 2,260.83 and 975.19

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Solution

The fourth proportional to 1,638.27, 2,260.83 and 975.19 is: 1,345.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.27 : 2,260.83 = 975.19 : x
  2. Step 2: Convert to fraction form
    1,638.27/2,260.83 = 975.19/x
  3. Step 3: Cross multiply
    1,638.27x = 2,260.83 × 975.19
  4. Step 4: Simplify right side
    1,638.27x = 2,204,738.81
  5. Step 5: Solve for x
    x = 2,204,738.81/1,638.27
  6. Step 6: Final answer
    x = 1,345.77

Related Problems

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Half scale
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Double scale
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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.