Home / 8,435.47-11,638.87-6,543.72

Finding the Fourth Proportional to 8,435.47, 11,638.87 and 6,543.72

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Solution

The fourth proportional to 8,435.47, 11,638.87 and 6,543.72 is: 9,028.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,435.47 : 11,638.87 = 6,543.72 : x
  2. Step 2: Convert to fraction form
    8,435.47/11,638.87 = 6,543.72/x
  3. Step 3: Cross multiply
    8,435.47x = 11,638.87 × 6,543.72
  4. Step 4: Simplify right side
    8,435.47x = 76,161,506.40
  5. Step 5: Solve for x
    x = 76,161,506.40/8,435.47
  6. Step 6: Final answer
    x = 9,028.72

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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.