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Finding the Fourth Proportional to 1,342.13, 1,852.14 and 876.38

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Solution

The fourth proportional to 1,342.13, 1,852.14 and 876.38 is: 1,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342.13 : 1,852.14 = 876.38 : x
  2. Step 2: Convert to fraction form
    1,342.13/1,852.14 = 876.38/x
  3. Step 3: Cross multiply
    1,342.13x = 1,852.14 × 876.38
  4. Step 4: Simplify right side
    1,342.13x = 1,623,178.45
  5. Step 5: Solve for x
    x = 1,623,178.45/1,342.13
  6. Step 6: Final answer
    x = 1,209.40

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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.