Home / 5,260.12-7,890.16-2,140.08

Finding the Fourth Proportional to 5,260.12, 7,890.16 and 2,140.08

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Solution

The fourth proportional to 5,260.12, 7,890.16 and 2,140.08 is: 3,210.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,260.12 : 7,890.16 = 2,140.08 : x
  2. Step 2: Convert to fraction form
    5,260.12/7,890.16 = 2,140.08/x
  3. Step 3: Cross multiply
    5,260.12x = 7,890.16 × 2,140.08
  4. Step 4: Simplify right side
    5,260.12x = 16,885,573.61
  5. Step 5: Solve for x
    x = 16,885,573.61/5,260.12
  6. Step 6: Final answer
    x = 3,210.11

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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.