Home / 8,921.14-12,315.45-6,270.82

Finding the Fourth Proportional to 8,921.14, 12,315.45 and 6,270.82

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Solution

The fourth proportional to 8,921.14, 12,315.45 and 6,270.82 is: 8,656.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.14 : 12,315.45 = 6,270.82 : x
  2. Step 2: Convert to fraction form
    8,921.14/12,315.45 = 6,270.82/x
  3. Step 3: Cross multiply
    8,921.14x = 12,315.45 × 6,270.82
  4. Step 4: Simplify right side
    8,921.14x = 77,227,970.17
  5. Step 5: Solve for x
    x = 77,227,970.17/8,921.14
  6. Step 6: Final answer
    x = 8,656.74

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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.