Home / 5,281.56-7,287.66-3,515.72

Finding the Fourth Proportional to 5,281.56, 7,287.66 and 3,515.72

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Solution

The fourth proportional to 5,281.56, 7,287.66 and 3,515.72 is: 4,851.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.56 : 7,287.66 = 3,515.72 : x
  2. Step 2: Convert to fraction form
    5,281.56/7,287.66 = 3,515.72/x
  3. Step 3: Cross multiply
    5,281.56x = 7,287.66 × 3,515.72
  4. Step 4: Simplify right side
    5,281.56x = 25,621,372.02
  5. Step 5: Solve for x
    x = 25,621,372.02/5,281.56
  6. Step 6: Final answer
    x = 4,851.10

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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.