Home / 2,421.95-3,342.19-1,374.21

Finding the Fourth Proportional to 2,421.95, 3,342.19 and 1,374.21

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Solution

The fourth proportional to 2,421.95, 3,342.19 and 1,374.21 is: 1,896.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.95 : 3,342.19 = 1,374.21 : x
  2. Step 2: Convert to fraction form
    2,421.95/3,342.19 = 1,374.21/x
  3. Step 3: Cross multiply
    2,421.95x = 3,342.19 × 1,374.21
  4. Step 4: Simplify right side
    2,421.95x = 4,592,870.92
  5. Step 5: Solve for x
    x = 4,592,870.92/2,421.95
  6. Step 6: Final answer
    x = 1,896.35

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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.