Home / 8,921.68-12,284.43-7,925.23

Finding the Fourth Proportional to 8,921.68, 12,284.43 and 7,925.23

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Solution

The fourth proportional to 8,921.68, 12,284.43 and 7,925.23 is: 10,912.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.68 : 12,284.43 = 7,925.23 : x
  2. Step 2: Convert to fraction form
    8,921.68/12,284.43 = 7,925.23/x
  3. Step 3: Cross multiply
    8,921.68x = 12,284.43 × 7,925.23
  4. Step 4: Simplify right side
    8,921.68x = 97,356,933.17
  5. Step 5: Solve for x
    x = 97,356,933.17/8,921.68
  6. Step 6: Final answer
    x = 10,912.40

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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.