Home / 7,919.34-11,878.59-2,988.66

Finding the Fourth Proportional to 7,919.34, 11,878.59 and 2,988.66

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Solution

The fourth proportional to 7,919.34, 11,878.59 and 2,988.66 is: 4,482.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,919.34 : 11,878.59 = 2,988.66 : x
  2. Step 2: Convert to fraction form
    7,919.34/11,878.59 = 2,988.66/x
  3. Step 3: Cross multiply
    7,919.34x = 11,878.59 × 2,988.66
  4. Step 4: Simplify right side
    7,919.34x = 35,501,066.79
  5. Step 5: Solve for x
    x = 35,501,066.79/7,919.34
  6. Step 6: Final answer
    x = 4,482.83

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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.