Home / 3,130.76-4,694.16-2,666.72

Finding the Fourth Proportional to 3,130.76, 4,694.16 and 2,666.72

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Solution

The fourth proportional to 3,130.76, 4,694.16 and 2,666.72 is: 3,998.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.76 : 4,694.16 = 2,666.72 : x
  2. Step 2: Convert to fraction form
    3,130.76/4,694.16 = 2,666.72/x
  3. Step 3: Cross multiply
    3,130.76x = 4,694.16 × 2,666.72
  4. Step 4: Simplify right side
    3,130.76x = 12,518,010.36
  5. Step 5: Solve for x
    x = 12,518,010.36/3,130.76
  6. Step 6: Final answer
    x = 3,998.39

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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.