Home / 2,280.12-3,154.86-1,986.36

Finding the Fourth Proportional to 2,280.12, 3,154.86 and 1,986.36

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Solution

The fourth proportional to 2,280.12, 3,154.86 and 1,986.36 is: 2,748.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.12 : 3,154.86 = 1,986.36 : x
  2. Step 2: Convert to fraction form
    2,280.12/3,154.86 = 1,986.36/x
  3. Step 3: Cross multiply
    2,280.12x = 3,154.86 × 1,986.36
  4. Step 4: Simplify right side
    2,280.12x = 6,266,687.71
  5. Step 5: Solve for x
    x = 6,266,687.71/2,280.12
  6. Step 6: Final answer
    x = 2,748.40

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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.