Home / 1,565.35-2,158.85-1,317.25

Finding the Fourth Proportional to 1,565.35, 2,158.85 and 1,317.25

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Solution

The fourth proportional to 1,565.35, 2,158.85 and 1,317.25 is: 1,816.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,565.35 : 2,158.85 = 1,317.25 : x
  2. Step 2: Convert to fraction form
    1,565.35/2,158.85 = 1,317.25/x
  3. Step 3: Cross multiply
    1,565.35x = 2,158.85 × 1,317.25
  4. Step 4: Simplify right side
    1,565.35x = 2,843,745.16
  5. Step 5: Solve for x
    x = 2,843,745.16/1,565.35
  6. Step 6: Final answer
    x = 1,816.68

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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.