Home / 7,890.69-10,889.15-4,353.90

Finding the Fourth Proportional to 7,890.69, 10,889.15 and 4,353.90

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Solution

The fourth proportional to 7,890.69, 10,889.15 and 4,353.90 is: 6,008.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.69 : 10,889.15 = 4,353.90 : x
  2. Step 2: Convert to fraction form
    7,890.69/10,889.15 = 4,353.90/x
  3. Step 3: Cross multiply
    7,890.69x = 10,889.15 × 4,353.90
  4. Step 4: Simplify right side
    7,890.69x = 47,410,268.83
  5. Step 5: Solve for x
    x = 47,410,268.83/7,890.69
  6. Step 6: Final answer
    x = 6,008.38

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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.