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Finding the Fourth Proportional to 1,776.76, 2,455.19 and 1,691.41

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Solution

The fourth proportional to 1,776.76, 2,455.19 and 1,691.41 is: 2,337.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,776.76 : 2,455.19 = 1,691.41 : x
  2. Step 2: Convert to fraction form
    1,776.76/2,455.19 = 1,691.41/x
  3. Step 3: Cross multiply
    1,776.76x = 2,455.19 × 1,691.41
  4. Step 4: Simplify right side
    1,776.76x = 4,152,724.67
  5. Step 5: Solve for x
    x = 4,152,724.67/1,776.76
  6. Step 6: Final answer
    x = 2,337.24

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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.