Home / 1,468.20-2,025.24-878.40

Finding the Fourth Proportional to 1,468.20, 2,025.24 and 878.40

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Solution

The fourth proportional to 1,468.20, 2,025.24 and 878.40 is: 1,211.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,468.20 : 2,025.24 = 878.40 : x
  2. Step 2: Convert to fraction form
    1,468.20/2,025.24 = 878.40/x
  3. Step 3: Cross multiply
    1,468.20x = 2,025.24 × 878.40
  4. Step 4: Simplify right side
    1,468.20x = 1,778,970.82
  5. Step 5: Solve for x
    x = 1,778,970.82/1,468.20
  6. Step 6: Final answer
    x = 1,211.67

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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.