Home / 1,547.53-2,331.92-1,279.62

Finding the Fourth Proportional to 1,547.53, 2,331.92 and 1,279.62

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Solution

The fourth proportional to 1,547.53, 2,331.92 and 1,279.62 is: 1,928.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.53 : 2,331.92 = 1,279.62 : x
  2. Step 2: Convert to fraction form
    1,547.53/2,331.92 = 1,279.62/x
  3. Step 3: Cross multiply
    1,547.53x = 2,331.92 × 1,279.62
  4. Step 4: Simplify right side
    1,547.53x = 2,983,974.67
  5. Step 5: Solve for x
    x = 2,983,974.67/1,547.53
  6. Step 6: Final answer
    x = 1,928.22

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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.