Home / 9,187.60-12,678.52-5,209.56

Finding the Fourth Proportional to 9,187.60, 12,678.52 and 5,209.56

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Solution

The fourth proportional to 9,187.60, 12,678.52 and 5,209.56 is: 7,188.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,187.60 : 12,678.52 = 5,209.56 : x
  2. Step 2: Convert to fraction form
    9,187.60/12,678.52 = 5,209.56/x
  3. Step 3: Cross multiply
    9,187.60x = 12,678.52 × 5,209.56
  4. Step 4: Simplify right side
    9,187.60x = 66,049,510.65
  5. Step 5: Solve for x
    x = 66,049,510.65/9,187.60
  6. Step 6: Final answer
    x = 7,188.98

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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.