Home / 5,077.08-7,005.87-2,980.80

Finding the Fourth Proportional to 5,077.08, 7,005.87 and 2,980.80

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Solution

The fourth proportional to 5,077.08, 7,005.87 and 2,980.80 is: 4,113.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,077.08 : 7,005.87 = 2,980.80 : x
  2. Step 2: Convert to fraction form
    5,077.08/7,005.87 = 2,980.80/x
  3. Step 3: Cross multiply
    5,077.08x = 7,005.87 × 2,980.80
  4. Step 4: Simplify right side
    5,077.08x = 20,883,097.30
  5. Step 5: Solve for x
    x = 20,883,097.30/5,077.08
  6. Step 6: Final answer
    x = 4,113.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.