Home / 2,280.36-3,421.35-819.93

Finding the Fourth Proportional to 2,280.36, 3,421.35 and 819.93

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Solution

The fourth proportional to 2,280.36, 3,421.35 and 819.93 is: 1,230.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.36 : 3,421.35 = 819.93 : x
  2. Step 2: Convert to fraction form
    2,280.36/3,421.35 = 819.93/x
  3. Step 3: Cross multiply
    2,280.36x = 3,421.35 × 819.93
  4. Step 4: Simplify right side
    2,280.36x = 2,805,267.51
  5. Step 5: Solve for x
    x = 2,805,267.51/2,280.36
  6. Step 6: Final answer
    x = 1,230.19

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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.