Home / 2,421.73-3,342.13-1,427.66

Finding the Fourth Proportional to 2,421.73, 3,342.13 and 1,427.66

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Solution

The fourth proportional to 2,421.73, 3,342.13 and 1,427.66 is: 1,970.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.73 : 3,342.13 = 1,427.66 : x
  2. Step 2: Convert to fraction form
    2,421.73/3,342.13 = 1,427.66/x
  3. Step 3: Cross multiply
    2,421.73x = 3,342.13 × 1,427.66
  4. Step 4: Simplify right side
    2,421.73x = 4,771,417.57
  5. Step 5: Solve for x
    x = 4,771,417.57/2,421.73
  6. Step 6: Final answer
    x = 1,970.25

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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.