Home / 9,205.12-12,700.88-5,225.36

Finding the Fourth Proportional to 9,205.12, 12,700.88 and 5,225.36

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Solution

The fourth proportional to 9,205.12, 12,700.88 and 5,225.36 is: 7,209.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,205.12 : 12,700.88 = 5,225.36 : x
  2. Step 2: Convert to fraction form
    9,205.12/12,700.88 = 5,225.36/x
  3. Step 3: Cross multiply
    9,205.12x = 12,700.88 × 5,225.36
  4. Step 4: Simplify right side
    9,205.12x = 66,366,670.32
  5. Step 5: Solve for x
    x = 66,366,670.32/9,205.12
  6. Step 6: Final answer
    x = 7,209.76

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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.