Home / 1,547.60-2,134.92-1,317.20

Finding the Fourth Proportional to 1,547.60, 2,134.92 and 1,317.20

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Solution

The fourth proportional to 1,547.60, 2,134.92 and 1,317.20 is: 1,817.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.60 : 2,134.92 = 1,317.20 : x
  2. Step 2: Convert to fraction form
    1,547.60/2,134.92 = 1,317.20/x
  3. Step 3: Cross multiply
    1,547.60x = 2,134.92 × 1,317.20
  4. Step 4: Simplify right side
    1,547.60x = 2,812,116.62
  5. Step 5: Solve for x
    x = 2,812,116.62/1,547.60
  6. Step 6: Final answer
    x = 1,817.08

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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.