Home / 3,430.40-5,145.60-2,598.80

Finding the Fourth Proportional to 3,430.40, 5,145.60 and 2,598.80

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Solution

The fourth proportional to 3,430.40, 5,145.60 and 2,598.80 is: 3,898.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.40 : 5,145.60 = 2,598.80 : x
  2. Step 2: Convert to fraction form
    3,430.40/5,145.60 = 2,598.80/x
  3. Step 3: Cross multiply
    3,430.40x = 5,145.60 × 2,598.80
  4. Step 4: Simplify right side
    3,430.40x = 13,372,385.28
  5. Step 5: Solve for x
    x = 13,372,385.28/3,430.40
  6. Step 6: Final answer
    x = 3,898.20

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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.