Home / 9,075.75-12,485.65-8,686.95

Finding the Fourth Proportional to 9,075.75, 12,485.65 and 8,686.95

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Solution

The fourth proportional to 9,075.75, 12,485.65 and 8,686.95 is: 11,950.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,075.75 : 12,485.65 = 8,686.95 : x
  2. Step 2: Convert to fraction form
    9,075.75/12,485.65 = 8,686.95/x
  3. Step 3: Cross multiply
    9,075.75x = 12,485.65 × 8,686.95
  4. Step 4: Simplify right side
    9,075.75x = 108,462,217.27
  5. Step 5: Solve for x
    x = 108,462,217.27/9,075.75
  6. Step 6: Final answer
    x = 11,950.77

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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.