Home / 7,143.12-9,862.20-4,353.36

Finding the Fourth Proportional to 7,143.12, 9,862.20 and 4,353.36

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Solution

The fourth proportional to 7,143.12, 9,862.20 and 4,353.36 is: 6,010.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.12 : 9,862.20 = 4,353.36 : x
  2. Step 2: Convert to fraction form
    7,143.12/9,862.20 = 4,353.36/x
  3. Step 3: Cross multiply
    7,143.12x = 9,862.20 × 4,353.36
  4. Step 4: Simplify right side
    7,143.12x = 42,933,706.99
  5. Step 5: Solve for x
    x = 42,933,706.99/7,143.12
  6. Step 6: Final answer
    x = 6,010.50

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1.5x scale

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.