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Finding the Fourth Proportional to 8,953.36, 12,355.76 and 4,974.40

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Solution

The fourth proportional to 8,953.36, 12,355.76 and 4,974.40 is: 6,864.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,953.36 : 12,355.76 = 4,974.40 : x
  2. Step 2: Convert to fraction form
    8,953.36/12,355.76 = 4,974.40/x
  3. Step 3: Cross multiply
    8,953.36x = 12,355.76 × 4,974.40
  4. Step 4: Simplify right side
    8,953.36x = 61,462,492.54
  5. Step 5: Solve for x
    x = 61,462,492.54/8,953.36
  6. Step 6: Final answer
    x = 6,864.74

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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.