Home / 8,860.40-13,276.20-7,391.60

Finding the Fourth Proportional to 8,860.40, 13,276.20 and 7,391.60

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Solution

The fourth proportional to 8,860.40, 13,276.20 and 7,391.60 is: 11,075.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,860.40 : 13,276.20 = 7,391.60 : x
  2. Step 2: Convert to fraction form
    8,860.40/13,276.20 = 7,391.60/x
  3. Step 3: Cross multiply
    8,860.40x = 13,276.20 × 7,391.60
  4. Step 4: Simplify right side
    8,860.40x = 98,132,359.92
  5. Step 5: Solve for x
    x = 98,132,359.92/8,860.40
  6. Step 6: Final answer
    x = 11,075.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.