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Finding the Fourth Proportional to 6,543.15, 9,814.71 and 1,612.80

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Solution

The fourth proportional to 6,543.15, 9,814.71 and 1,612.80 is: 2,419.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,543.15 : 9,814.71 = 1,612.80 : x
  2. Step 2: Convert to fraction form
    6,543.15/9,814.71 = 1,612.80/x
  3. Step 3: Cross multiply
    6,543.15x = 9,814.71 × 1,612.80
  4. Step 4: Simplify right side
    6,543.15x = 15,829,164.29
  5. Step 5: Solve for x
    x = 15,829,164.29/6,543.15
  6. Step 6: Final answer
    x = 2,419.20

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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.