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Finding the Fourth Proportional to 4,140.15, 6,210 and 1,019.99

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Solution

The fourth proportional to 4,140.15, 6,210 and 1,019.99 is: 1,529.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.15 : 6,210 = 1,019.99 : x
  2. Step 2: Convert to fraction form
    4,140.15/6,210 = 1,019.99/x
  3. Step 3: Cross multiply
    4,140.15x = 6,210 × 1,019.99
  4. Step 4: Simplify right side
    4,140.15x = 6,334,153.43
  5. Step 5: Solve for x
    x = 6,334,153.43/4,140.15
  6. Step 6: Final answer
    x = 1,529.93

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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.