Home / 7,977.40-11,008.80-4,440.92

Finding the Fourth Proportional to 7,977.40, 11,008.80 and 4,440.92

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Solution

The fourth proportional to 7,977.40, 11,008.80 and 4,440.92 is: 6,128.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.40 : 11,008.80 = 4,440.92 : x
  2. Step 2: Convert to fraction form
    7,977.40/11,008.80 = 4,440.92/x
  3. Step 3: Cross multiply
    7,977.40x = 11,008.80 × 4,440.92
  4. Step 4: Simplify right side
    7,977.40x = 48,889,200.10
  5. Step 5: Solve for x
    x = 48,889,200.10/7,977.40
  6. Step 6: Final answer
    x = 6,128.46

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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.