Home / 1,385.08-2,077.87-460.69

Finding the Fourth Proportional to 1,385.08, 2,077.87 and 460.69

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Solution

The fourth proportional to 1,385.08, 2,077.87 and 460.69 is: 691.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385.08 : 2,077.87 = 460.69 : x
  2. Step 2: Convert to fraction form
    1,385.08/2,077.87 = 460.69/x
  3. Step 3: Cross multiply
    1,385.08x = 2,077.87 × 460.69
  4. Step 4: Simplify right side
    1,385.08x = 957,248.45
  5. Step 5: Solve for x
    x = 957,248.45/1,385.08
  6. Step 6: Final answer
    x = 691.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.