Home / 3,106.68-4,289.16-1,988.10

Finding the Fourth Proportional to 3,106.68, 4,289.16 and 1,988.10

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Solution

The fourth proportional to 3,106.68, 4,289.16 and 1,988.10 is: 2,744.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.68 : 4,289.16 = 1,988.10 : x
  2. Step 2: Convert to fraction form
    3,106.68/4,289.16 = 1,988.10/x
  3. Step 3: Cross multiply
    3,106.68x = 4,289.16 × 1,988.10
  4. Step 4: Simplify right side
    3,106.68x = 8,527,279.00
  5. Step 5: Solve for x
    x = 8,527,279.00/3,106.68
  6. Step 6: Final answer
    x = 2,744.82

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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.