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Finding the Fourth Proportional to 28,630.44, 42,946.88 and 7,853.94

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Solution

The fourth proportional to 28,630.44, 42,946.88 and 7,853.94 is: 11,781.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,630.44 : 42,946.88 = 7,853.94 : x
  2. Step 2: Convert to fraction form
    28,630.44/42,946.88 = 7,853.94/x
  3. Step 3: Cross multiply
    28,630.44x = 42,946.88 × 7,853.94
  4. Step 4: Simplify right side
    28,630.44x = 337,302,218.71
  5. Step 5: Solve for x
    x = 337,302,218.71/28,630.44
  6. Step 6: Final answer
    x = 11,781.24

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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.