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Finding the Fourth Proportional to 1,342.15, 1,852.14 and 752.88

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Solution

The fourth proportional to 1,342.15, 1,852.14 and 752.88 is: 1,038.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342.15 : 1,852.14 = 752.88 : x
  2. Step 2: Convert to fraction form
    1,342.15/1,852.14 = 752.88/x
  3. Step 3: Cross multiply
    1,342.15x = 1,852.14 × 752.88
  4. Step 4: Simplify right side
    1,342.15x = 1,394,429.90
  5. Step 5: Solve for x
    x = 1,394,429.90/1,342.15
  6. Step 6: Final answer
    x = 1,038.95

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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.