Home / 6,543.40-9,815.28-2,647.48

Finding the Fourth Proportional to 6,543.40, 9,815.28 and 2,647.48

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Solution

The fourth proportional to 6,543.40, 9,815.28 and 2,647.48 is: 3,971.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,543.40 : 9,815.28 = 2,647.48 : x
  2. Step 2: Convert to fraction form
    6,543.40/9,815.28 = 2,647.48/x
  3. Step 3: Cross multiply
    6,543.40x = 9,815.28 × 2,647.48
  4. Step 4: Simplify right side
    6,543.40x = 25,985,757.49
  5. Step 5: Solve for x
    x = 25,985,757.49/6,543.40
  6. Step 6: Final answer
    x = 3,971.29

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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.