Home / 5,106.90-7,658.31-1,985.16

Finding the Fourth Proportional to 5,106.90, 7,658.31 and 1,985.16

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Solution

The fourth proportional to 5,106.90, 7,658.31 and 1,985.16 is: 2,976.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,106.90 : 7,658.31 = 1,985.16 : x
  2. Step 2: Convert to fraction form
    5,106.90/7,658.31 = 1,985.16/x
  3. Step 3: Cross multiply
    5,106.90x = 7,658.31 × 1,985.16
  4. Step 4: Simplify right side
    5,106.90x = 15,202,970.68
  5. Step 5: Solve for x
    x = 15,202,970.68/5,106.90
  6. Step 6: Final answer
    x = 2,976.95

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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.