Home / 1,577.32-2,175.66-1,079.08

Finding the Fourth Proportional to 1,577.32, 2,175.66 and 1,079.08

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Solution

The fourth proportional to 1,577.32, 2,175.66 and 1,079.08 is: 1,488.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,577.32 : 2,175.66 = 1,079.08 : x
  2. Step 2: Convert to fraction form
    1,577.32/2,175.66 = 1,079.08/x
  3. Step 3: Cross multiply
    1,577.32x = 2,175.66 × 1,079.08
  4. Step 4: Simplify right side
    1,577.32x = 2,347,711.19
  5. Step 5: Solve for x
    x = 2,347,711.19/1,577.32
  6. Step 6: Final answer
    x = 1,488.42

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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.