Home / 3,116.79-4,301.10-1,790.46

Finding the Fourth Proportional to 3,116.79, 4,301.10 and 1,790.46

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Solution

The fourth proportional to 3,116.79, 4,301.10 and 1,790.46 is: 2,470.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.79 : 4,301.10 = 1,790.46 : x
  2. Step 2: Convert to fraction form
    3,116.79/4,301.10 = 1,790.46/x
  3. Step 3: Cross multiply
    3,116.79x = 4,301.10 × 1,790.46
  4. Step 4: Simplify right side
    3,116.79x = 7,700,947.51
  5. Step 5: Solve for x
    x = 7,700,947.51/3,116.79
  6. Step 6: Final answer
    x = 2,470.79

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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.