Home / 7,977.60-11,966.31-2,430.90

Finding the Fourth Proportional to 7,977.60, 11,966.31 and 2,430.90

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Solution

The fourth proportional to 7,977.60, 11,966.31 and 2,430.90 is: 3,646.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.60 : 11,966.31 = 2,430.90 : x
  2. Step 2: Convert to fraction form
    7,977.60/11,966.31 = 2,430.90/x
  3. Step 3: Cross multiply
    7,977.60x = 11,966.31 × 2,430.90
  4. Step 4: Simplify right side
    7,977.60x = 29,088,902.98
  5. Step 5: Solve for x
    x = 29,088,902.98/7,977.60
  6. Step 6: Final answer
    x = 3,646.32

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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.