Home / 7,890.20-10,888.11-4,305.08

Finding the Fourth Proportional to 7,890.20, 10,888.11 and 4,305.08

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Solution

The fourth proportional to 7,890.20, 10,888.11 and 4,305.08 is: 5,940.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.20 : 10,888.11 = 4,305.08 : x
  2. Step 2: Convert to fraction form
    7,890.20/10,888.11 = 4,305.08/x
  3. Step 3: Cross multiply
    7,890.20x = 10,888.11 × 4,305.08
  4. Step 4: Simplify right side
    7,890.20x = 46,874,130.16
  5. Step 5: Solve for x
    x = 46,874,130.16/7,890.20
  6. Step 6: Final answer
    x = 5,940.81

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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.