Home / 8,278.39-12,398.45-4,984.22

Finding the Fourth Proportional to 8,278.39, 12,398.45 and 4,984.22

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Solution

The fourth proportional to 8,278.39, 12,398.45 and 4,984.22 is: 7,464.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.39 : 12,398.45 = 4,984.22 : x
  2. Step 2: Convert to fraction form
    8,278.39/12,398.45 = 4,984.22/x
  3. Step 3: Cross multiply
    8,278.39x = 12,398.45 × 4,984.22
  4. Step 4: Simplify right side
    8,278.39x = 61,796,602.46
  5. Step 5: Solve for x
    x = 61,796,602.46/8,278.39
  6. Step 6: Final answer
    x = 7,464.81

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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.