Home / 1,547.24-2,331.50-1,279.35

Finding the Fourth Proportional to 1,547.24, 2,331.50 and 1,279.35

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Solution

The fourth proportional to 1,547.24, 2,331.50 and 1,279.35 is: 1,927.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.24 : 2,331.50 = 1,279.35 : x
  2. Step 2: Convert to fraction form
    1,547.24/2,331.50 = 1,279.35/x
  3. Step 3: Cross multiply
    1,547.24x = 2,331.50 × 1,279.35
  4. Step 4: Simplify right side
    1,547.24x = 2,982,798.13
  5. Step 5: Solve for x
    x = 2,982,798.13/1,547.24
  6. Step 6: Final answer
    x = 1,927.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.