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Finding the Fourth Proportional to 5,708.48, 8,559.60 and 5,328.80

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Solution

The fourth proportional to 5,708.48, 8,559.60 and 5,328.80 is: 7,990.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,708.48 : 8,559.60 = 5,328.80 : x
  2. Step 2: Convert to fraction form
    5,708.48/8,559.60 = 5,328.80/x
  3. Step 3: Cross multiply
    5,708.48x = 8,559.60 × 5,328.80
  4. Step 4: Simplify right side
    5,708.48x = 45,612,396.48
  5. Step 5: Solve for x
    x = 45,612,396.48/5,708.48
  6. Step 6: Final answer
    x = 7,990.29

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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.