Home / 3,001.20-4,501.80-2,900.40

Finding the Fourth Proportional to 3,001.20, 4,501.80 and 2,900.40

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Solution

The fourth proportional to 3,001.20, 4,501.80 and 2,900.40 is: 4,350.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,001.20 : 4,501.80 = 2,900.40 : x
  2. Step 2: Convert to fraction form
    3,001.20/4,501.80 = 2,900.40/x
  3. Step 3: Cross multiply
    3,001.20x = 4,501.80 × 2,900.40
  4. Step 4: Simplify right side
    3,001.20x = 13,057,020.72
  5. Step 5: Solve for x
    x = 13,057,020.72/3,001.20
  6. Step 6: Final answer
    x = 4,350.60

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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.