Home / 9,187.40-12,678.69-4,995.65

Finding the Fourth Proportional to 9,187.40, 12,678.69 and 4,995.65

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Solution

The fourth proportional to 9,187.40, 12,678.69 and 4,995.65 is: 6,894.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,187.40 : 12,678.69 = 4,995.65 : x
  2. Step 2: Convert to fraction form
    9,187.40/12,678.69 = 4,995.65/x
  3. Step 3: Cross multiply
    9,187.40x = 12,678.69 × 4,995.65
  4. Step 4: Simplify right side
    9,187.40x = 63,338,234.31
  5. Step 5: Solve for x
    x = 63,338,234.31/9,187.40
  6. Step 6: Final answer
    x = 6,894.04

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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.