Home / 7,720.13-11,580.20-1,876.70

Finding the Fourth Proportional to 7,720.13, 11,580.20 and 1,876.70

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Solution

The fourth proportional to 7,720.13, 11,580.20 and 1,876.70 is: 2,815.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.13 : 11,580.20 = 1,876.70 : x
  2. Step 2: Convert to fraction form
    7,720.13/11,580.20 = 1,876.70/x
  3. Step 3: Cross multiply
    7,720.13x = 11,580.20 × 1,876.70
  4. Step 4: Simplify right side
    7,720.13x = 21,732,594.98
  5. Step 5: Solve for x
    x = 21,732,594.98/7,720.13
  6. Step 6: Final answer
    x = 2,815.05

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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.