Home / 8,922.96-12,312.81-5,146.47

Finding the Fourth Proportional to 8,922.96, 12,312.81 and 5,146.47

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Solution

The fourth proportional to 8,922.96, 12,312.81 and 5,146.47 is: 7,101.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,922.96 : 12,312.81 = 5,146.47 : x
  2. Step 2: Convert to fraction form
    8,922.96/12,312.81 = 5,146.47/x
  3. Step 3: Cross multiply
    8,922.96x = 12,312.81 × 5,146.47
  4. Step 4: Simplify right side
    8,922.96x = 63,367,507.28
  5. Step 5: Solve for x
    x = 63,367,507.28/8,922.96
  6. Step 6: Final answer
    x = 7,101.62

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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.