Home / 1,547.20-2,132.32-1,457.60

Finding the Fourth Proportional to 1,547.20, 2,132.32 and 1,457.60

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Solution

The fourth proportional to 1,547.20, 2,132.32 and 1,457.60 is: 2,008.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.20 : 2,132.32 = 1,457.60 : x
  2. Step 2: Convert to fraction form
    1,547.20/2,132.32 = 1,457.60/x
  3. Step 3: Cross multiply
    1,547.20x = 2,132.32 × 1,457.60
  4. Step 4: Simplify right side
    1,547.20x = 3,108,069.63
  5. Step 5: Solve for x
    x = 3,108,069.63/1,547.20
  6. Step 6: Final answer
    x = 2,008.84

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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.