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Finding the Fourth Proportional to 2,868.40, 4,302.62 and 788.44

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Solution

The fourth proportional to 2,868.40, 4,302.62 and 788.44 is: 1,182.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,868.40 : 4,302.62 = 788.44 : x
  2. Step 2: Convert to fraction form
    2,868.40/4,302.62 = 788.44/x
  3. Step 3: Cross multiply
    2,868.40x = 4,302.62 × 788.44
  4. Step 4: Simplify right side
    2,868.40x = 3,392,357.71
  5. Step 5: Solve for x
    x = 3,392,357.71/2,868.40
  6. Step 6: Final answer
    x = 1,182.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.