Home / 7,287.12-10,056.20-4,143.30

Finding the Fourth Proportional to 7,287.12, 10,056.20 and 4,143.30

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Solution

The fourth proportional to 7,287.12, 10,056.20 and 4,143.30 is: 5,717.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,287.12 : 10,056.20 = 4,143.30 : x
  2. Step 2: Convert to fraction form
    7,287.12/10,056.20 = 4,143.30/x
  3. Step 3: Cross multiply
    7,287.12x = 10,056.20 × 4,143.30
  4. Step 4: Simplify right side
    7,287.12x = 41,665,853.46
  5. Step 5: Solve for x
    x = 41,665,853.46/7,287.12
  6. Step 6: Final answer
    x = 5,717.74

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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.