Home / 7,978.74-11,010.85-4,442.19

Finding the Fourth Proportional to 7,978.74, 11,010.85 and 4,442.19

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Solution

The fourth proportional to 7,978.74, 11,010.85 and 4,442.19 is: 6,130.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,978.74 : 11,010.85 = 4,442.19 : x
  2. Step 2: Convert to fraction form
    7,978.74/11,010.85 = 4,442.19/x
  3. Step 3: Cross multiply
    7,978.74x = 11,010.85 × 4,442.19
  4. Step 4: Simplify right side
    7,978.74x = 48,912,232.71
  5. Step 5: Solve for x
    x = 48,912,232.71/7,978.74
  6. Step 6: Final answer
    x = 6,130.32

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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.