Home / 5,287.76-7,289.16-3,515.60

Finding the Fourth Proportional to 5,287.76, 7,289.16 and 3,515.60

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Solution

The fourth proportional to 5,287.76, 7,289.16 and 3,515.60 is: 4,846.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,287.76 : 7,289.16 = 3,515.60 : x
  2. Step 2: Convert to fraction form
    5,287.76/7,289.16 = 3,515.60/x
  3. Step 3: Cross multiply
    5,287.76x = 7,289.16 × 3,515.60
  4. Step 4: Simplify right side
    5,287.76x = 25,625,770.90
  5. Step 5: Solve for x
    x = 25,625,770.90/5,287.76
  6. Step 6: Final answer
    x = 4,846.24

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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.