Home / 7,009.72-10,521.50-3,722.80

Finding the Fourth Proportional to 7,009.72, 10,521.50 and 3,722.80

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Solution

The fourth proportional to 7,009.72, 10,521.50 and 3,722.80 is: 5,587.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,009.72 : 10,521.50 = 3,722.80 : x
  2. Step 2: Convert to fraction form
    7,009.72/10,521.50 = 3,722.80/x
  3. Step 3: Cross multiply
    7,009.72x = 10,521.50 × 3,722.80
  4. Step 4: Simplify right side
    7,009.72x = 39,169,434.74
  5. Step 5: Solve for x
    x = 39,169,434.74/7,009.72
  6. Step 6: Final answer
    x = 5,587.88

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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.