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Finding the Fourth Proportional to 5,931.40, 8,894.40 and 2,645.50

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Solution

The fourth proportional to 5,931.40, 8,894.40 and 2,645.50 is: 3,967.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,931.40 : 8,894.40 = 2,645.50 : x
  2. Step 2: Convert to fraction form
    5,931.40/8,894.40 = 2,645.50/x
  3. Step 3: Cross multiply
    5,931.40x = 8,894.40 × 2,645.50
  4. Step 4: Simplify right side
    5,931.40x = 23,530,135.20
  5. Step 5: Solve for x
    x = 23,530,135.20/5,931.40
  6. Step 6: Final answer
    x = 3,967.05

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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.