Home / 7,890.60-11,835.90-4,974.60

Finding the Fourth Proportional to 7,890.60, 11,835.90 and 4,974.60

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Solution

The fourth proportional to 7,890.60, 11,835.90 and 4,974.60 is: 7,461.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.60 : 11,835.90 = 4,974.60 : x
  2. Step 2: Convert to fraction form
    7,890.60/11,835.90 = 4,974.60/x
  3. Step 3: Cross multiply
    7,890.60x = 11,835.90 × 4,974.60
  4. Step 4: Simplify right side
    7,890.60x = 58,878,868.14
  5. Step 5: Solve for x
    x = 58,878,868.14/7,890.60
  6. Step 6: Final answer
    x = 7,461.90

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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.