Home / 2,290.20-3,432.60-1,712.40

Finding the Fourth Proportional to 2,290.20, 3,432.60 and 1,712.40

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Solution

The fourth proportional to 2,290.20, 3,432.60 and 1,712.40 is: 2,566.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.20 : 3,432.60 = 1,712.40 : x
  2. Step 2: Convert to fraction form
    2,290.20/3,432.60 = 1,712.40/x
  3. Step 3: Cross multiply
    2,290.20x = 3,432.60 × 1,712.40
  4. Step 4: Simplify right side
    2,290.20x = 5,877,984.24
  5. Step 5: Solve for x
    x = 5,877,984.24/2,290.20
  6. Step 6: Final answer
    x = 2,566.58

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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.