Home / 5,099.19-7,646.68-1,978.59

Finding the Fourth Proportional to 5,099.19, 7,646.68 and 1,978.59

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Solution

The fourth proportional to 5,099.19, 7,646.68 and 1,978.59 is: 2,967.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,099.19 : 7,646.68 = 1,978.59 : x
  2. Step 2: Convert to fraction form
    5,099.19/7,646.68 = 1,978.59/x
  3. Step 3: Cross multiply
    5,099.19x = 7,646.68 × 1,978.59
  4. Step 4: Simplify right side
    5,099.19x = 15,129,644.58
  5. Step 5: Solve for x
    x = 15,129,644.58/5,099.19
  6. Step 6: Final answer
    x = 2,967.07

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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.