Home / 3,438.40-5,153.92-1,587.36

Finding the Fourth Proportional to 3,438.40, 5,153.92 and 1,587.36

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Solution

The fourth proportional to 3,438.40, 5,153.92 and 1,587.36 is: 2,379.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.40 : 5,153.92 = 1,587.36 : x
  2. Step 2: Convert to fraction form
    3,438.40/5,153.92 = 1,587.36/x
  3. Step 3: Cross multiply
    3,438.40x = 5,153.92 × 1,587.36
  4. Step 4: Simplify right side
    3,438.40x = 8,181,126.45
  5. Step 5: Solve for x
    x = 8,181,126.45/3,438.40
  6. Step 6: Final answer
    x = 2,379.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.