Home / 7,890.60-11,826.30-3,503.40

Finding the Fourth Proportional to 7,890.60, 11,826.30 and 3,503.40

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Solution

The fourth proportional to 7,890.60, 11,826.30 and 3,503.40 is: 5,250.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.60 : 11,826.30 = 3,503.40 : x
  2. Step 2: Convert to fraction form
    7,890.60/11,826.30 = 3,503.40/x
  3. Step 3: Cross multiply
    7,890.60x = 11,826.30 × 3,503.40
  4. Step 4: Simplify right side
    7,890.60x = 41,432,259.42
  5. Step 5: Solve for x
    x = 41,432,259.42/7,890.60
  6. Step 6: Final answer
    x = 5,250.84

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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.