Home / 6,782.78-9,350.60-4,987.10

Finding the Fourth Proportional to 6,782.78, 9,350.60 and 4,987.10

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Solution

The fourth proportional to 6,782.78, 9,350.60 and 4,987.10 is: 6,875.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,782.78 : 9,350.60 = 4,987.10 : x
  2. Step 2: Convert to fraction form
    6,782.78/9,350.60 = 4,987.10/x
  3. Step 3: Cross multiply
    6,782.78x = 9,350.60 × 4,987.10
  4. Step 4: Simplify right side
    6,782.78x = 46,632,375.70
  5. Step 5: Solve for x
    x = 46,632,375.70/6,782.78
  6. Step 6: Final answer
    x = 6,875.11

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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.