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Finding the Fourth Proportional to 8,242.40, 12,363.60 and 4,953.80

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Solution

The fourth proportional to 8,242.40, 12,363.60 and 4,953.80 is: 7,430.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,242.40 : 12,363.60 = 4,953.80 : x
  2. Step 2: Convert to fraction form
    8,242.40/12,363.60 = 4,953.80/x
  3. Step 3: Cross multiply
    8,242.40x = 12,363.60 × 4,953.80
  4. Step 4: Simplify right side
    8,242.40x = 61,246,801.68
  5. Step 5: Solve for x
    x = 61,246,801.68/8,242.40
  6. Step 6: Final answer
    x = 7,430.70

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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.