Home / 7,937.45-11,904.65-3,987.65

Finding the Fourth Proportional to 7,937.45, 11,904.65 and 3,987.65

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Solution

The fourth proportional to 7,937.45, 11,904.65 and 3,987.65 is: 5,980.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,937.45 : 11,904.65 = 3,987.65 : x
  2. Step 2: Convert to fraction form
    7,937.45/11,904.65 = 3,987.65/x
  3. Step 3: Cross multiply
    7,937.45x = 11,904.65 × 3,987.65
  4. Step 4: Simplify right side
    7,937.45x = 47,471,498.11
  5. Step 5: Solve for x
    x = 47,471,498.11/7,937.45
  6. Step 6: Final answer
    x = 5,980.70

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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.