Home / 1,557.11-2,151.62-1,114.24

Finding the Fourth Proportional to 1,557.11, 2,151.62 and 1,114.24

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Solution

The fourth proportional to 1,557.11, 2,151.62 and 1,114.24 is: 1,539.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.11 : 2,151.62 = 1,114.24 : x
  2. Step 2: Convert to fraction form
    1,557.11/2,151.62 = 1,114.24/x
  3. Step 3: Cross multiply
    1,557.11x = 2,151.62 × 1,114.24
  4. Step 4: Simplify right side
    1,557.11x = 2,397,421.07
  5. Step 5: Solve for x
    x = 2,397,421.07/1,557.11
  6. Step 6: Final answer
    x = 1,539.66

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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.