Home / 5,235.76-7,855.10-2,117.95

Finding the Fourth Proportional to 5,235.76, 7,855.10 and 2,117.95

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Solution

The fourth proportional to 5,235.76, 7,855.10 and 2,117.95 is: 3,177.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,235.76 : 7,855.10 = 2,117.95 : x
  2. Step 2: Convert to fraction form
    5,235.76/7,855.10 = 2,117.95/x
  3. Step 3: Cross multiply
    5,235.76x = 7,855.10 × 2,117.95
  4. Step 4: Simplify right side
    5,235.76x = 16,636,698.46
  5. Step 5: Solve for x
    x = 16,636,698.46/5,235.76
  6. Step 6: Final answer
    x = 3,177.52

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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.