Home / 5,278.77-7,284.50-3,155.48

Finding the Fourth Proportional to 5,278.77, 7,284.50 and 3,155.48

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Solution

The fourth proportional to 5,278.77, 7,284.50 and 3,155.48 is: 4,354.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.77 : 7,284.50 = 3,155.48 : x
  2. Step 2: Convert to fraction form
    5,278.77/7,284.50 = 3,155.48/x
  3. Step 3: Cross multiply
    5,278.77x = 7,284.50 × 3,155.48
  4. Step 4: Simplify right side
    5,278.77x = 22,986,041.86
  5. Step 5: Solve for x
    x = 22,986,041.86/5,278.77
  6. Step 6: Final answer
    x = 4,354.43

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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.