Home / 3,125.40-4,689.04-934.20

Finding the Fourth Proportional to 3,125.40, 4,689.04 and 934.20

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Solution

The fourth proportional to 3,125.40, 4,689.04 and 934.20 is: 1,401.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.40 : 4,689.04 = 934.20 : x
  2. Step 2: Convert to fraction form
    3,125.40/4,689.04 = 934.20/x
  3. Step 3: Cross multiply
    3,125.40x = 4,689.04 × 934.20
  4. Step 4: Simplify right side
    3,125.40x = 4,380,501.17
  5. Step 5: Solve for x
    x = 4,380,501.17/3,125.40
  6. Step 6: Final answer
    x = 1,401.58

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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.