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Finding the Fourth Proportional to 1,358.34, 1,874.60 and 760.85

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Solution

The fourth proportional to 1,358.34, 1,874.60 and 760.85 is: 1,050.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.34 : 1,874.60 = 760.85 : x
  2. Step 2: Convert to fraction form
    1,358.34/1,874.60 = 760.85/x
  3. Step 3: Cross multiply
    1,358.34x = 1,874.60 × 760.85
  4. Step 4: Simplify right side
    1,358.34x = 1,426,276.23
  5. Step 5: Solve for x
    x = 1,426,276.23/1,358.34
  6. Step 6: Final answer
    x = 1,050.01

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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.