Home / 7,129.40-10,695.70-4,206.20

Finding the Fourth Proportional to 7,129.40, 10,695.70 and 4,206.20

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Solution

The fourth proportional to 7,129.40, 10,695.70 and 4,206.20 is: 6,310.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129.40 : 10,695.70 = 4,206.20 : x
  2. Step 2: Convert to fraction form
    7,129.40/10,695.70 = 4,206.20/x
  3. Step 3: Cross multiply
    7,129.40x = 10,695.70 × 4,206.20
  4. Step 4: Simplify right side
    7,129.40x = 44,988,253.34
  5. Step 5: Solve for x
    x = 44,988,253.34/7,129.40
  6. Step 6: Final answer
    x = 6,310.24

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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.