Home / 7,415.52-11,116.80-4,819.20

Finding the Fourth Proportional to 7,415.52, 11,116.80 and 4,819.20

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Solution

The fourth proportional to 7,415.52, 11,116.80 and 4,819.20 is: 7,224.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,415.52 : 11,116.80 = 4,819.20 : x
  2. Step 2: Convert to fraction form
    7,415.52/11,116.80 = 4,819.20/x
  3. Step 3: Cross multiply
    7,415.52x = 11,116.80 × 4,819.20
  4. Step 4: Simplify right side
    7,415.52x = 53,574,082.56
  5. Step 5: Solve for x
    x = 53,574,082.56/7,415.52
  6. Step 6: Final answer
    x = 7,224.59

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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.