Home / 2,980.60-4,478.10-2,663.80

Finding the Fourth Proportional to 2,980.60, 4,478.10 and 2,663.80

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Solution

The fourth proportional to 2,980.60, 4,478.10 and 2,663.80 is: 4,002.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.60 : 4,478.10 = 2,663.80 : x
  2. Step 2: Convert to fraction form
    2,980.60/4,478.10 = 2,663.80/x
  3. Step 3: Cross multiply
    2,980.60x = 4,478.10 × 2,663.80
  4. Step 4: Simplify right side
    2,980.60x = 11,928,762.78
  5. Step 5: Solve for x
    x = 11,928,762.78/2,980.60
  6. Step 6: Final answer
    x = 4,002.13

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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.