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Finding the Fourth Proportional to 1,758.71, 2,427.01 and 972.75

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Solution

The fourth proportional to 1,758.71, 2,427.01 and 972.75 is: 1,342.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,758.71 : 2,427.01 = 972.75 : x
  2. Step 2: Convert to fraction form
    1,758.71/2,427.01 = 972.75/x
  3. Step 3: Cross multiply
    1,758.71x = 2,427.01 × 972.75
  4. Step 4: Simplify right side
    1,758.71x = 2,360,871.55
  5. Step 5: Solve for x
    x = 2,360,871.55/1,758.71
  6. Step 6: Final answer
    x = 1,342.39

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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.