Home / 7,177.04-9,904.77-3,990.37

Finding the Fourth Proportional to 7,177.04, 9,904.77 and 3,990.37

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Solution

The fourth proportional to 7,177.04, 9,904.77 and 3,990.37 is: 5,506.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,177.04 : 9,904.77 = 3,990.37 : x
  2. Step 2: Convert to fraction form
    7,177.04/9,904.77 = 3,990.37/x
  3. Step 3: Cross multiply
    7,177.04x = 9,904.77 × 3,990.37
  4. Step 4: Simplify right side
    7,177.04x = 39,523,638.77
  5. Step 5: Solve for x
    x = 39,523,638.77/7,177.04
  6. Step 6: Final answer
    x = 5,506.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.