Home / 7,758.08-10,705.84-4,221.28

Finding the Fourth Proportional to 7,758.08, 10,705.84 and 4,221.28

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Solution

The fourth proportional to 7,758.08, 10,705.84 and 4,221.28 is: 5,825.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,758.08 : 10,705.84 = 4,221.28 : x
  2. Step 2: Convert to fraction form
    7,758.08/10,705.84 = 4,221.28/x
  3. Step 3: Cross multiply
    7,758.08x = 10,705.84 × 4,221.28
  4. Step 4: Simplify right side
    7,758.08x = 45,192,348.28
  5. Step 5: Solve for x
    x = 45,192,348.28/7,758.08
  6. Step 6: Final answer
    x = 5,825.20

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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.