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Finding the Fourth Proportional to 5,547.40, 8,321.10 and 4,089.40

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Solution

The fourth proportional to 5,547.40, 8,321.10 and 4,089.40 is: 6,134.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,547.40 : 8,321.10 = 4,089.40 : x
  2. Step 2: Convert to fraction form
    5,547.40/8,321.10 = 4,089.40/x
  3. Step 3: Cross multiply
    5,547.40x = 8,321.10 × 4,089.40
  4. Step 4: Simplify right side
    5,547.40x = 34,028,306.34
  5. Step 5: Solve for x
    x = 34,028,306.34/5,547.40
  6. Step 6: Final answer
    x = 6,134.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.