Home / 8,421.76-11,622.08-4,887.08

Finding the Fourth Proportional to 8,421.76, 11,622.08 and 4,887.08

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Solution

The fourth proportional to 8,421.76, 11,622.08 and 4,887.08 is: 6,744.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.76 : 11,622.08 = 4,887.08 : x
  2. Step 2: Convert to fraction form
    8,421.76/11,622.08 = 4,887.08/x
  3. Step 3: Cross multiply
    8,421.76x = 11,622.08 × 4,887.08
  4. Step 4: Simplify right side
    8,421.76x = 56,798,034.73
  5. Step 5: Solve for x
    x = 56,798,034.73/8,421.76
  6. Step 6: Final answer
    x = 6,744.20

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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.