Home / 2,223.70-3,069.78-1,478.90

Finding the Fourth Proportional to 2,223.70, 3,069.78 and 1,478.90

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Solution

The fourth proportional to 2,223.70, 3,069.78 and 1,478.90 is: 2,041.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,223.70 : 3,069.78 = 1,478.90 : x
  2. Step 2: Convert to fraction form
    2,223.70/3,069.78 = 1,478.90/x
  3. Step 3: Cross multiply
    2,223.70x = 3,069.78 × 1,478.90
  4. Step 4: Simplify right side
    2,223.70x = 4,539,897.64
  5. Step 5: Solve for x
    x = 4,539,897.64/2,223.70
  6. Step 6: Final answer
    x = 2,041.60

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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.