Home / 5,219.30-7,829.10-1,323.70

Finding the Fourth Proportional to 5,219.30, 7,829.10 and 1,323.70

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Solution

The fourth proportional to 5,219.30, 7,829.10 and 1,323.70 is: 1,985.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,219.30 : 7,829.10 = 1,323.70 : x
  2. Step 2: Convert to fraction form
    5,219.30/7,829.10 = 1,323.70/x
  3. Step 3: Cross multiply
    5,219.30x = 7,829.10 × 1,323.70
  4. Step 4: Simplify right side
    5,219.30x = 10,363,379.67
  5. Step 5: Solve for x
    x = 10,363,379.67/5,219.30
  6. Step 6: Final answer
    x = 1,985.59

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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.