Home / 7,890.81-10,889.31-4,354.02

Finding the Fourth Proportional to 7,890.81, 10,889.31 and 4,354.02

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Solution

The fourth proportional to 7,890.81, 10,889.31 and 4,354.02 is: 6,008.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.81 : 10,889.31 = 4,354.02 : x
  2. Step 2: Convert to fraction form
    7,890.81/10,889.31 = 4,354.02/x
  3. Step 3: Cross multiply
    7,890.81x = 10,889.31 × 4,354.02
  4. Step 4: Simplify right side
    7,890.81x = 47,412,197.31
  5. Step 5: Solve for x
    x = 47,412,197.31/7,890.81
  6. Step 6: Final answer
    x = 6,008.54

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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.