Home / 1,355.04-1,871.52-1,000.48

Finding the Fourth Proportional to 1,355.04, 1,871.52 and 1,000.48

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Solution

The fourth proportional to 1,355.04, 1,871.52 and 1,000.48 is: 1,381.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355.04 : 1,871.52 = 1,000.48 : x
  2. Step 2: Convert to fraction form
    1,355.04/1,871.52 = 1,000.48/x
  3. Step 3: Cross multiply
    1,355.04x = 1,871.52 × 1,000.48
  4. Step 4: Simplify right side
    1,355.04x = 1,872,418.33
  5. Step 5: Solve for x
    x = 1,872,418.33/1,355.04
  6. Step 6: Final answer
    x = 1,381.82

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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.