Home / 2,420.19-3,339.45-1,425.51

Finding the Fourth Proportional to 2,420.19, 3,339.45 and 1,425.51

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Solution

The fourth proportional to 2,420.19, 3,339.45 and 1,425.51 is: 1,966.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.19 : 3,339.45 = 1,425.51 : x
  2. Step 2: Convert to fraction form
    2,420.19/3,339.45 = 1,425.51/x
  3. Step 3: Cross multiply
    2,420.19x = 3,339.45 × 1,425.51
  4. Step 4: Simplify right side
    2,420.19x = 4,760,419.37
  5. Step 5: Solve for x
    x = 4,760,419.37/2,420.19
  6. Step 6: Final answer
    x = 1,966.96

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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.