Home / 7,063.20-9,748.08-3,920.40

Finding the Fourth Proportional to 7,063.20, 9,748.08 and 3,920.40

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Solution

The fourth proportional to 7,063.20, 9,748.08 and 3,920.40 is: 5,410.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,063.20 : 9,748.08 = 3,920.40 : x
  2. Step 2: Convert to fraction form
    7,063.20/9,748.08 = 3,920.40/x
  3. Step 3: Cross multiply
    7,063.20x = 9,748.08 × 3,920.40
  4. Step 4: Simplify right side
    7,063.20x = 38,216,372.83
  5. Step 5: Solve for x
    x = 38,216,372.83/7,063.20
  6. Step 6: Final answer
    x = 5,410.63

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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.