Home / 7,380.60-11,021.98-6,486.36

Finding the Fourth Proportional to 7,380.60, 11,021.98 and 6,486.36

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Solution

The fourth proportional to 7,380.60, 11,021.98 and 6,486.36 is: 9,686.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,380.60 : 11,021.98 = 6,486.36 : x
  2. Step 2: Convert to fraction form
    7,380.60/11,021.98 = 6,486.36/x
  3. Step 3: Cross multiply
    7,380.60x = 11,021.98 × 6,486.36
  4. Step 4: Simplify right side
    7,380.60x = 71,492,530.19
  5. Step 5: Solve for x
    x = 71,492,530.19/7,380.60
  6. Step 6: Final answer
    x = 9,686.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.