Home / 4,980.20-7,470.30-4,753.40

Finding the Fourth Proportional to 4,980.20, 7,470.30 and 4,753.40

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Solution

The fourth proportional to 4,980.20, 7,470.30 and 4,753.40 is: 7,130.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,980.20 : 7,470.30 = 4,753.40 : x
  2. Step 2: Convert to fraction form
    4,980.20/7,470.30 = 4,753.40/x
  3. Step 3: Cross multiply
    4,980.20x = 7,470.30 × 4,753.40
  4. Step 4: Simplify right side
    4,980.20x = 35,509,324.02
  5. Step 5: Solve for x
    x = 35,509,324.02/4,980.20
  6. Step 6: Final answer
    x = 7,130.10

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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.