Home / 5,125.40-7,686.30-1,838.60

Finding the Fourth Proportional to 5,125.40, 7,686.30 and 1,838.60

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Solution

The fourth proportional to 5,125.40, 7,686.30 and 1,838.60 is: 2,757.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.40 : 7,686.30 = 1,838.60 : x
  2. Step 2: Convert to fraction form
    5,125.40/7,686.30 = 1,838.60/x
  3. Step 3: Cross multiply
    5,125.40x = 7,686.30 × 1,838.60
  4. Step 4: Simplify right side
    5,125.40x = 14,132,031.18
  5. Step 5: Solve for x
    x = 14,132,031.18/5,125.40
  6. Step 6: Final answer
    x = 2,757.25

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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.