Home / 2,374.21-3,275.61-1,378.67

Finding the Fourth Proportional to 2,374.21, 3,275.61 and 1,378.67

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Solution

The fourth proportional to 2,374.21, 3,275.61 and 1,378.67 is: 1,902.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,374.21 : 3,275.61 = 1,378.67 : x
  2. Step 2: Convert to fraction form
    2,374.21/3,275.61 = 1,378.67/x
  3. Step 3: Cross multiply
    2,374.21x = 3,275.61 × 1,378.67
  4. Step 4: Simplify right side
    2,374.21x = 4,515,970.16
  5. Step 5: Solve for x
    x = 4,515,970.16/2,374.21
  6. Step 6: Final answer
    x = 1,902.10

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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.