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Finding the Fourth Proportional to 2,859.70, 4,289.55 and 2,746.30

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Solution

The fourth proportional to 2,859.70, 4,289.55 and 2,746.30 is: 4,119.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,859.70 : 4,289.55 = 2,746.30 : x
  2. Step 2: Convert to fraction form
    2,859.70/4,289.55 = 2,746.30/x
  3. Step 3: Cross multiply
    2,859.70x = 4,289.55 × 2,746.30
  4. Step 4: Simplify right side
    2,859.70x = 11,780,391.17
  5. Step 5: Solve for x
    x = 11,780,391.17/2,859.70
  6. Step 6: Final answer
    x = 4,119.45

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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.