Home / 5,384.15-8,071.35-1,920.59

Finding the Fourth Proportional to 5,384.15, 8,071.35 and 1,920.59

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Solution

The fourth proportional to 5,384.15, 8,071.35 and 1,920.59 is: 2,879.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,384.15 : 8,071.35 = 1,920.59 : x
  2. Step 2: Convert to fraction form
    5,384.15/8,071.35 = 1,920.59/x
  3. Step 3: Cross multiply
    5,384.15x = 8,071.35 × 1,920.59
  4. Step 4: Simplify right side
    5,384.15x = 15,501,744.49
  5. Step 5: Solve for x
    x = 15,501,744.49/5,384.15
  6. Step 6: Final answer
    x = 2,879.14

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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.