Home / 5,711.60-8,543.40-5,130.80

Finding the Fourth Proportional to 5,711.60, 8,543.40 and 5,130.80

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Solution

The fourth proportional to 5,711.60, 8,543.40 and 5,130.80 is: 7,674.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,711.60 : 8,543.40 = 5,130.80 : x
  2. Step 2: Convert to fraction form
    5,711.60/8,543.40 = 5,130.80/x
  3. Step 3: Cross multiply
    5,711.60x = 8,543.40 × 5,130.80
  4. Step 4: Simplify right side
    5,711.60x = 43,834,476.72
  5. Step 5: Solve for x
    x = 43,834,476.72/5,711.60
  6. Step 6: Final answer
    x = 7,674.64

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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.