Home / 1,534.38-2,117.50-913.74

Finding the Fourth Proportional to 1,534.38, 2,117.50 and 913.74

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Solution

The fourth proportional to 1,534.38, 2,117.50 and 913.74 is: 1,260.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,534.38 : 2,117.50 = 913.74 : x
  2. Step 2: Convert to fraction form
    1,534.38/2,117.50 = 913.74/x
  3. Step 3: Cross multiply
    1,534.38x = 2,117.50 × 913.74
  4. Step 4: Simplify right side
    1,534.38x = 1,934,844.45
  5. Step 5: Solve for x
    x = 1,934,844.45/1,534.38
  6. Step 6: Final answer
    x = 1,260.99

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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.