Home / 8,281.28-11,428.80-4,744.64

Finding the Fourth Proportional to 8,281.28, 11,428.80 and 4,744.64

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Solution

The fourth proportional to 8,281.28, 11,428.80 and 4,744.64 is: 6,547.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,281.28 : 11,428.80 = 4,744.64 : x
  2. Step 2: Convert to fraction form
    8,281.28/11,428.80 = 4,744.64/x
  3. Step 3: Cross multiply
    8,281.28x = 11,428.80 × 4,744.64
  4. Step 4: Simplify right side
    8,281.28x = 54,225,541.63
  5. Step 5: Solve for x
    x = 54,225,541.63/8,281.28
  6. Step 6: Final answer
    x = 6,547.97

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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.