Home / 6,973.50-9,623.88-3,990.30

Finding the Fourth Proportional to 6,973.50, 9,623.88 and 3,990.30

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Solution

The fourth proportional to 6,973.50, 9,623.88 and 3,990.30 is: 5,506.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,973.50 : 9,623.88 = 3,990.30 : x
  2. Step 2: Convert to fraction form
    6,973.50/9,623.88 = 3,990.30/x
  3. Step 3: Cross multiply
    6,973.50x = 9,623.88 × 3,990.30
  4. Step 4: Simplify right side
    6,973.50x = 38,402,168.36
  5. Step 5: Solve for x
    x = 38,402,168.36/6,973.50
  6. Step 6: Final answer
    x = 5,506.87

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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.