Home / 1,080.64-1,621.59-710.90

Finding the Fourth Proportional to 1,080.64, 1,621.59 and 710.90

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Solution

The fourth proportional to 1,080.64, 1,621.59 and 710.90 is: 1,066.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.64 : 1,621.59 = 710.90 : x
  2. Step 2: Convert to fraction form
    1,080.64/1,621.59 = 710.90/x
  3. Step 3: Cross multiply
    1,080.64x = 1,621.59 × 710.90
  4. Step 4: Simplify right side
    1,080.64x = 1,152,788.33
  5. Step 5: Solve for x
    x = 1,152,788.33/1,080.64
  6. Step 6: Final answer
    x = 1,066.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.