Home / 8,953.92-12,355.56-5,176.78

Finding the Fourth Proportional to 8,953.92, 12,355.56 and 5,176.78

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Solution

The fourth proportional to 8,953.92, 12,355.56 and 5,176.78 is: 7,143.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,953.92 : 12,355.56 = 5,176.78 : x
  2. Step 2: Convert to fraction form
    8,953.92/12,355.56 = 5,176.78/x
  3. Step 3: Cross multiply
    8,953.92x = 12,355.56 × 5,176.78
  4. Step 4: Simplify right side
    8,953.92x = 63,961,985.01
  5. Step 5: Solve for x
    x = 63,961,985.01/8,953.92
  6. Step 6: Final answer
    x = 7,143.46

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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.