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Finding the Fourth Proportional to 4,685.70, 7,040.70 and 4,151.10

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Solution

The fourth proportional to 4,685.70, 7,040.70 and 4,151.10 is: 6,237.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,685.70 : 7,040.70 = 4,151.10 : x
  2. Step 2: Convert to fraction form
    4,685.70/7,040.70 = 4,151.10/x
  3. Step 3: Cross multiply
    4,685.70x = 7,040.70 × 4,151.10
  4. Step 4: Simplify right side
    4,685.70x = 29,226,649.77
  5. Step 5: Solve for x
    x = 29,226,649.77/4,685.70
  6. Step 6: Final answer
    x = 6,237.41

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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.