Home / 5,275.80-7,281.90-3,180.60

Finding the Fourth Proportional to 5,275.80, 7,281.90 and 3,180.60

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Solution

The fourth proportional to 5,275.80, 7,281.90 and 3,180.60 is: 4,390.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.80 : 7,281.90 = 3,180.60 : x
  2. Step 2: Convert to fraction form
    5,275.80/7,281.90 = 3,180.60/x
  3. Step 3: Cross multiply
    5,275.80x = 7,281.90 × 3,180.60
  4. Step 4: Simplify right side
    5,275.80x = 23,160,811.14
  5. Step 5: Solve for x
    x = 23,160,811.14/5,275.80
  6. Step 6: Final answer
    x = 4,390.01

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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.