Home / 5,178.36-7,765.74-1,479.59

Finding the Fourth Proportional to 5,178.36, 7,765.74 and 1,479.59

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Solution

The fourth proportional to 5,178.36, 7,765.74 and 1,479.59 is: 2,218.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.36 : 7,765.74 = 1,479.59 : x
  2. Step 2: Convert to fraction form
    5,178.36/7,765.74 = 1,479.59/x
  3. Step 3: Cross multiply
    5,178.36x = 7,765.74 × 1,479.59
  4. Step 4: Simplify right side
    5,178.36x = 11,490,111.25
  5. Step 5: Solve for x
    x = 11,490,111.25/5,178.36
  6. Step 6: Final answer
    x = 2,218.87

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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.