Home / 3,439.90-5,157.56-1,248.35

Finding the Fourth Proportional to 3,439.90, 5,157.56 and 1,248.35

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Solution

The fourth proportional to 3,439.90, 5,157.56 and 1,248.35 is: 1,871.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439.90 : 5,157.56 = 1,248.35 : x
  2. Step 2: Convert to fraction form
    3,439.90/5,157.56 = 1,248.35/x
  3. Step 3: Cross multiply
    3,439.90x = 5,157.56 × 1,248.35
  4. Step 4: Simplify right side
    3,439.90x = 6,438,417.36
  5. Step 5: Solve for x
    x = 6,438,417.36/3,439.90
  6. Step 6: Final answer
    x = 1,871.69

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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.