Home / 8,154.28-11,252.88-4,428.28

Finding the Fourth Proportional to 8,154.28, 11,252.88 and 4,428.28

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Solution

The fourth proportional to 8,154.28, 11,252.88 and 4,428.28 is: 6,111.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,154.28 : 11,252.88 = 4,428.28 : x
  2. Step 2: Convert to fraction form
    8,154.28/11,252.88 = 4,428.28/x
  3. Step 3: Cross multiply
    8,154.28x = 11,252.88 × 4,428.28
  4. Step 4: Simplify right side
    8,154.28x = 49,830,903.45
  5. Step 5: Solve for x
    x = 49,830,903.45/8,154.28
  6. Step 6: Final answer
    x = 6,111.01

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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.