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Finding the Fourth Proportional to 7,018.68, 9,686.07 and 4,035.45

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Solution

The fourth proportional to 7,018.68, 9,686.07 and 4,035.45 is: 5,569.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,018.68 : 9,686.07 = 4,035.45 : x
  2. Step 2: Convert to fraction form
    7,018.68/9,686.07 = 4,035.45/x
  3. Step 3: Cross multiply
    7,018.68x = 9,686.07 × 4,035.45
  4. Step 4: Simplify right side
    7,018.68x = 39,087,651.18
  5. Step 5: Solve for x
    x = 39,087,651.18/7,018.68
  6. Step 6: Final answer
    x = 5,569.09

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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.