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Finding the Fourth Proportional to 8,953.12, 12,355.29 and 4,974.60

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Solution

The fourth proportional to 8,953.12, 12,355.29 and 4,974.60 is: 6,864.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,953.12 : 12,355.29 = 4,974.60 : x
  2. Step 2: Convert to fraction form
    8,953.12/12,355.29 = 4,974.60/x
  3. Step 3: Cross multiply
    8,953.12x = 12,355.29 × 4,974.60
  4. Step 4: Simplify right side
    8,953.12x = 61,462,625.63
  5. Step 5: Solve for x
    x = 61,462,625.63/8,953.12
  6. Step 6: Final answer
    x = 6,864.94

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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.