Home / 2,226.40-3,071.88-1,439.50

Finding the Fourth Proportional to 2,226.40, 3,071.88 and 1,439.50

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Solution

The fourth proportional to 2,226.40, 3,071.88 and 1,439.50 is: 1,986.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,226.40 : 3,071.88 = 1,439.50 : x
  2. Step 2: Convert to fraction form
    2,226.40/3,071.88 = 1,439.50/x
  3. Step 3: Cross multiply
    2,226.40x = 3,071.88 × 1,439.50
  4. Step 4: Simplify right side
    2,226.40x = 4,421,971.26
  5. Step 5: Solve for x
    x = 4,421,971.26/2,226.40
  6. Step 6: Final answer
    x = 1,986.15

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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.