Home / 7,486.83-10,331.90-4,129.76

Finding the Fourth Proportional to 7,486.83, 10,331.90 and 4,129.76

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Solution

The fourth proportional to 7,486.83, 10,331.90 and 4,129.76 is: 5,699.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,486.83 : 10,331.90 = 4,129.76 : x
  2. Step 2: Convert to fraction form
    7,486.83/10,331.90 = 4,129.76/x
  3. Step 3: Cross multiply
    7,486.83x = 10,331.90 × 4,129.76
  4. Step 4: Simplify right side
    7,486.83x = 42,668,267.34
  5. Step 5: Solve for x
    x = 42,668,267.34/7,486.83
  6. Step 6: Final answer
    x = 5,699.11

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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.