Home / 6,919.24-10,379.48-1,988.76

Finding the Fourth Proportional to 6,919.24, 10,379.48 and 1,988.76

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Solution

The fourth proportional to 6,919.24, 10,379.48 and 1,988.76 is: 2,983.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,919.24 : 10,379.48 = 1,988.76 : x
  2. Step 2: Convert to fraction form
    6,919.24/10,379.48 = 1,988.76/x
  3. Step 3: Cross multiply
    6,919.24x = 10,379.48 × 1,988.76
  4. Step 4: Simplify right side
    6,919.24x = 20,642,294.64
  5. Step 5: Solve for x
    x = 20,642,294.64/6,919.24
  6. Step 6: Final answer
    x = 2,983.32

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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.