Home / 7,486.20-10,330.88-4,128.93

Finding the Fourth Proportional to 7,486.20, 10,330.88 and 4,128.93

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Solution

The fourth proportional to 7,486.20, 10,330.88 and 4,128.93 is: 5,697.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,486.20 : 10,330.88 = 4,128.93 : x
  2. Step 2: Convert to fraction form
    7,486.20/10,330.88 = 4,128.93/x
  3. Step 3: Cross multiply
    7,486.20x = 10,330.88 × 4,128.93
  4. Step 4: Simplify right side
    7,486.20x = 42,655,459.71
  5. Step 5: Solve for x
    x = 42,655,459.71/7,486.20
  6. Step 6: Final answer
    x = 5,697.88

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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.