Home / 7,890.95-11,840.58-3,214.42

Finding the Fourth Proportional to 7,890.95, 11,840.58 and 3,214.42

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Solution

The fourth proportional to 7,890.95, 11,840.58 and 3,214.42 is: 4,823.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.95 : 11,840.58 = 3,214.42 : x
  2. Step 2: Convert to fraction form
    7,890.95/11,840.58 = 3,214.42/x
  3. Step 3: Cross multiply
    7,890.95x = 11,840.58 × 3,214.42
  4. Step 4: Simplify right side
    7,890.95x = 38,060,567.56
  5. Step 5: Solve for x
    x = 38,060,567.56/7,890.95
  6. Step 6: Final answer
    x = 4,823.32

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1.5x scale

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.