Home / 5,219.69-7,820.40-4,347.78

Finding the Fourth Proportional to 5,219.69, 7,820.40 and 4,347.78

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Solution

The fourth proportional to 5,219.69, 7,820.40 and 4,347.78 is: 6,514.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,219.69 : 7,820.40 = 4,347.78 : x
  2. Step 2: Convert to fraction form
    5,219.69/7,820.40 = 4,347.78/x
  3. Step 3: Cross multiply
    5,219.69x = 7,820.40 × 4,347.78
  4. Step 4: Simplify right side
    5,219.69x = 34,001,378.71
  5. Step 5: Solve for x
    x = 34,001,378.71/5,219.69
  6. Step 6: Final answer
    x = 6,514.07

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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.