Home / 2,225.64-3,071.35-1,230.90

Finding the Fourth Proportional to 2,225.64, 3,071.35 and 1,230.90

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Solution

The fourth proportional to 2,225.64, 3,071.35 and 1,230.90 is: 1,698.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.64 : 3,071.35 = 1,230.90 : x
  2. Step 2: Convert to fraction form
    2,225.64/3,071.35 = 1,230.90/x
  3. Step 3: Cross multiply
    2,225.64x = 3,071.35 × 1,230.90
  4. Step 4: Simplify right side
    2,225.64x = 3,780,526.25
  5. Step 5: Solve for x
    x = 3,780,526.25/2,225.64
  6. Step 6: Final answer
    x = 1,698.62

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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.