Home / 2,421.19-3,340.83-1,426.51

Finding the Fourth Proportional to 2,421.19, 3,340.83 and 1,426.51

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Solution

The fourth proportional to 2,421.19, 3,340.83 and 1,426.51 is: 1,968.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.19 : 3,340.83 = 1,426.51 : x
  2. Step 2: Convert to fraction form
    2,421.19/3,340.83 = 1,426.51/x
  3. Step 3: Cross multiply
    2,421.19x = 3,340.83 × 1,426.51
  4. Step 4: Simplify right side
    2,421.19x = 4,765,727.40
  5. Step 5: Solve for x
    x = 4,765,727.40/2,421.19
  6. Step 6: Final answer
    x = 1,968.34

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Half scale
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Double 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.