Home / 2,421.19-3,341.24-1,427.08

Finding the Fourth Proportional to 2,421.19, 3,341.24 and 1,427.08

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Solution

The fourth proportional to 2,421.19, 3,341.24 and 1,427.08 is: 1,969.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.19 : 3,341.24 = 1,427.08 : x
  2. Step 2: Convert to fraction form
    2,421.19/3,341.24 = 1,427.08/x
  3. Step 3: Cross multiply
    2,421.19x = 3,341.24 × 1,427.08
  4. Step 4: Simplify right side
    2,421.19x = 4,768,216.78
  5. Step 5: Solve for x
    x = 4,768,216.78/2,421.19
  6. Step 6: Final answer
    x = 1,969.37

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Half scale
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Double scale
Find fourth proportional to 2,422.19, 3,342.62 and 1,428.08
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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.