Home / 7,720.39-11,579.35-2,454.70

Finding the Fourth Proportional to 7,720.39, 11,579.35 and 2,454.70

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Solution

The fourth proportional to 7,720.39, 11,579.35 and 2,454.70 is: 3,681.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.39 : 11,579.35 = 2,454.70 : x
  2. Step 2: Convert to fraction form
    7,720.39/11,579.35 = 2,454.70/x
  3. Step 3: Cross multiply
    7,720.39x = 11,579.35 × 2,454.70
  4. Step 4: Simplify right side
    7,720.39x = 28,423,830.45
  5. Step 5: Solve for x
    x = 28,423,830.45/7,720.39
  6. Step 6: Final answer
    x = 3,681.66

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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.