Home / 1,565.86-2,161.13-1,006.30

Finding the Fourth Proportional to 1,565.86, 2,161.13 and 1,006.30

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Solution

The fourth proportional to 1,565.86, 2,161.13 and 1,006.30 is: 1,388.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,565.86 : 2,161.13 = 1,006.30 : x
  2. Step 2: Convert to fraction form
    1,565.86/2,161.13 = 1,006.30/x
  3. Step 3: Cross multiply
    1,565.86x = 2,161.13 × 1,006.30
  4. Step 4: Simplify right side
    1,565.86x = 2,174,742.37
  5. Step 5: Solve for x
    x = 2,174,742.37/1,565.86
  6. Step 6: Final answer
    x = 1,388.85

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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.