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Finding the Fourth Proportional to 1,757.60, 2,425.53 and 971.69

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Solution

The fourth proportional to 1,757.60, 2,425.53 and 971.69 is: 1,340.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,757.60 : 2,425.53 = 971.69 : x
  2. Step 2: Convert to fraction form
    1,757.60/2,425.53 = 971.69/x
  3. Step 3: Cross multiply
    1,757.60x = 2,425.53 × 971.69
  4. Step 4: Simplify right side
    1,757.60x = 2,356,869.31
  5. Step 5: Solve for x
    x = 2,356,869.31/1,757.60
  6. Step 6: Final answer
    x = 1,340.96

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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.