Home / 1,565.22-2,161.61-1,354.38

Finding the Fourth Proportional to 1,565.22, 2,161.61 and 1,354.38

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Solution

The fourth proportional to 1,565.22, 2,161.61 and 1,354.38 is: 1,870.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,565.22 : 2,161.61 = 1,354.38 : x
  2. Step 2: Convert to fraction form
    1,565.22/2,161.61 = 1,354.38/x
  3. Step 3: Cross multiply
    1,565.22x = 2,161.61 × 1,354.38
  4. Step 4: Simplify right side
    1,565.22x = 2,927,641.35
  5. Step 5: Solve for x
    x = 2,927,641.35/1,565.22
  6. Step 6: Final answer
    x = 1,870.43

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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.