Home / 2,686.23-4,030.56-1,225.80

Finding the Fourth Proportional to 2,686.23, 4,030.56 and 1,225.80

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Solution

The fourth proportional to 2,686.23, 4,030.56 and 1,225.80 is: 1,839.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.23 : 4,030.56 = 1,225.80 : x
  2. Step 2: Convert to fraction form
    2,686.23/4,030.56 = 1,225.80/x
  3. Step 3: Cross multiply
    2,686.23x = 4,030.56 × 1,225.80
  4. Step 4: Simplify right side
    2,686.23x = 4,940,660.45
  5. Step 5: Solve for x
    x = 4,940,660.45/2,686.23
  6. Step 6: Final answer
    x = 1,839.25

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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.