Home / 1,565.39-2,159.24-1,191.56

Finding the Fourth Proportional to 1,565.39, 2,159.24 and 1,191.56

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Solution

The fourth proportional to 1,565.39, 2,159.24 and 1,191.56 is: 1,643.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,565.39 : 2,159.24 = 1,191.56 : x
  2. Step 2: Convert to fraction form
    1,565.39/2,159.24 = 1,191.56/x
  3. Step 3: Cross multiply
    1,565.39x = 2,159.24 × 1,191.56
  4. Step 4: Simplify right side
    1,565.39x = 2,572,847.26
  5. Step 5: Solve for x
    x = 2,572,847.26/1,565.39
  6. Step 6: Final answer
    x = 1,643.58

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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.