Home / 8,812.92-12,162.21-5,275.45

Finding the Fourth Proportional to 8,812.92, 12,162.21 and 5,275.45

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Solution

The fourth proportional to 8,812.92, 12,162.21 and 5,275.45 is: 7,280.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.92 : 12,162.21 = 5,275.45 : x
  2. Step 2: Convert to fraction form
    8,812.92/12,162.21 = 5,275.45/x
  3. Step 3: Cross multiply
    8,812.92x = 12,162.21 × 5,275.45
  4. Step 4: Simplify right side
    8,812.92x = 64,161,100.34
  5. Step 5: Solve for x
    x = 64,161,100.34/8,812.92
  6. Step 6: Final answer
    x = 7,280.35

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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.