Home / 3,478.28-5,211.35-2,897.02

Finding the Fourth Proportional to 3,478.28, 5,211.35 and 2,897.02

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Solution

The fourth proportional to 3,478.28, 5,211.35 and 2,897.02 is: 4,340.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.28 : 5,211.35 = 2,897.02 : x
  2. Step 2: Convert to fraction form
    3,478.28/5,211.35 = 2,897.02/x
  3. Step 3: Cross multiply
    3,478.28x = 5,211.35 × 2,897.02
  4. Step 4: Simplify right side
    3,478.28x = 15,097,384.82
  5. Step 5: Solve for x
    x = 15,097,384.82/3,478.28
  6. Step 6: Final answer
    x = 4,340.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.