Home / 5,278.30-7,284.18-2,920.60

Finding the Fourth Proportional to 5,278.30, 7,284.18 and 2,920.60

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Solution

The fourth proportional to 5,278.30, 7,284.18 and 2,920.60 is: 4,030.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.30 : 7,284.18 = 2,920.60 : x
  2. Step 2: Convert to fraction form
    5,278.30/7,284.18 = 2,920.60/x
  3. Step 3: Cross multiply
    5,278.30x = 7,284.18 × 2,920.60
  4. Step 4: Simplify right side
    5,278.30x = 21,274,176.11
  5. Step 5: Solve for x
    x = 21,274,176.11/5,278.30
  6. Step 6: Final answer
    x = 4,030.50

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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.