Home / 5,119.52-7,678.98-1,656.50

Finding the Fourth Proportional to 5,119.52, 7,678.98 and 1,656.50

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Solution

The fourth proportional to 5,119.52, 7,678.98 and 1,656.50 is: 2,484.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.52 : 7,678.98 = 1,656.50 : x
  2. Step 2: Convert to fraction form
    5,119.52/7,678.98 = 1,656.50/x
  3. Step 3: Cross multiply
    5,119.52x = 7,678.98 × 1,656.50
  4. Step 4: Simplify right side
    5,119.52x = 12,720,230.37
  5. Step 5: Solve for x
    x = 12,720,230.37/5,119.52
  6. Step 6: Final answer
    x = 2,484.65

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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.