Home / 8,784.30-12,121.95-4,805.49

Finding the Fourth Proportional to 8,784.30, 12,121.95 and 4,805.49

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Solution

The fourth proportional to 8,784.30, 12,121.95 and 4,805.49 is: 6,631.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,784.30 : 12,121.95 = 4,805.49 : x
  2. Step 2: Convert to fraction form
    8,784.30/12,121.95 = 4,805.49/x
  3. Step 3: Cross multiply
    8,784.30x = 12,121.95 × 4,805.49
  4. Step 4: Simplify right side
    8,784.30x = 58,251,909.51
  5. Step 5: Solve for x
    x = 58,251,909.51/8,784.30
  6. Step 6: Final answer
    x = 6,631.37

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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.