Home / 7,922.40-10,932-4,385.60

Finding the Fourth Proportional to 7,922.40, 10,932 and 4,385.60

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Solution

The fourth proportional to 7,922.40, 10,932 and 4,385.60 is: 6,051.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,922.40 : 10,932 = 4,385.60 : x
  2. Step 2: Convert to fraction form
    7,922.40/10,932 = 4,385.60/x
  3. Step 3: Cross multiply
    7,922.40x = 10,932 × 4,385.60
  4. Step 4: Simplify right side
    7,922.40x = 47,943,379.20
  5. Step 5: Solve for x
    x = 47,943,379.20/7,922.40
  6. Step 6: Final answer
    x = 6,051.62

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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.