Home / 2,421.78-3,341.05-1,582.19

Finding the Fourth Proportional to 2,421.78, 3,341.05 and 1,582.19

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Solution

The fourth proportional to 2,421.78, 3,341.05 and 1,582.19 is: 2,182.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.78 : 3,341.05 = 1,582.19 : x
  2. Step 2: Convert to fraction form
    2,421.78/3,341.05 = 1,582.19/x
  3. Step 3: Cross multiply
    2,421.78x = 3,341.05 × 1,582.19
  4. Step 4: Simplify right side
    2,421.78x = 5,286,175.90
  5. Step 5: Solve for x
    x = 5,286,175.90/2,421.78
  6. Step 6: Final answer
    x = 2,182.76

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.