Home / 3,207.20-4,810.80-1,970.60

Finding the Fourth Proportional to 3,207.20, 4,810.80 and 1,970.60

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Solution

The fourth proportional to 3,207.20, 4,810.80 and 1,970.60 is: 2,955.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,207.20 : 4,810.80 = 1,970.60 : x
  2. Step 2: Convert to fraction form
    3,207.20/4,810.80 = 1,970.60/x
  3. Step 3: Cross multiply
    3,207.20x = 4,810.80 × 1,970.60
  4. Step 4: Simplify right side
    3,207.20x = 9,480,162.48
  5. Step 5: Solve for x
    x = 9,480,162.48/3,207.20
  6. Step 6: Final answer
    x = 2,955.90

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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.