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Finding the Fourth Proportional to 4,971.70, 6,856.95 and 4,372.90

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Solution

The fourth proportional to 4,971.70, 6,856.95 and 4,372.90 is: 6,031.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,971.70 : 6,856.95 = 4,372.90 : x
  2. Step 2: Convert to fraction form
    4,971.70/6,856.95 = 4,372.90/x
  3. Step 3: Cross multiply
    4,971.70x = 6,856.95 × 4,372.90
  4. Step 4: Simplify right side
    4,971.70x = 29,984,756.66
  5. Step 5: Solve for x
    x = 29,984,756.66/4,971.70
  6. Step 6: Final answer
    x = 6,031.09

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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.