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Finding the Fourth Proportional to 5,143.55, 7,098.11 and 3,018.67

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Solution

The fourth proportional to 5,143.55, 7,098.11 and 3,018.67 is: 4,165.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.55 : 7,098.11 = 3,018.67 : x
  2. Step 2: Convert to fraction form
    5,143.55/7,098.11 = 3,018.67/x
  3. Step 3: Cross multiply
    5,143.55x = 7,098.11 × 3,018.67
  4. Step 4: Simplify right side
    5,143.55x = 21,426,821.71
  5. Step 5: Solve for x
    x = 21,426,821.71/5,143.55
  6. Step 6: Final answer
    x = 4,165.76

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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.