Home / 2,860.80-3,948.78-1,666.14

Finding the Fourth Proportional to 2,860.80, 3,948.78 and 1,666.14

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Solution

The fourth proportional to 2,860.80, 3,948.78 and 1,666.14 is: 2,299.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.80 : 3,948.78 = 1,666.14 : x
  2. Step 2: Convert to fraction form
    2,860.80/3,948.78 = 1,666.14/x
  3. Step 3: Cross multiply
    2,860.80x = 3,948.78 × 1,666.14
  4. Step 4: Simplify right side
    2,860.80x = 6,579,220.31
  5. Step 5: Solve for x
    x = 6,579,220.31/2,860.80
  6. Step 6: Final answer
    x = 2,299.78

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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.