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Finding the Fourth Proportional to 7,124.58, 10,686.05 and 1,930.05

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Solution

The fourth proportional to 7,124.58, 10,686.05 and 1,930.05 is: 2,894.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124.58 : 10,686.05 = 1,930.05 : x
  2. Step 2: Convert to fraction form
    7,124.58/10,686.05 = 1,930.05/x
  3. Step 3: Cross multiply
    7,124.58x = 10,686.05 × 1,930.05
  4. Step 4: Simplify right side
    7,124.58x = 20,624,610.80
  5. Step 5: Solve for x
    x = 20,624,610.80/7,124.58
  6. Step 6: Final answer
    x = 2,894.85

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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.