Home / 7,637.12-10,538.40-5,648.80

Finding the Fourth Proportional to 7,637.12, 10,538.40 and 5,648.80

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Solution

The fourth proportional to 7,637.12, 10,538.40 and 5,648.80 is: 7,794.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,637.12 : 10,538.40 = 5,648.80 : x
  2. Step 2: Convert to fraction form
    7,637.12/10,538.40 = 5,648.80/x
  3. Step 3: Cross multiply
    7,637.12x = 10,538.40 × 5,648.80
  4. Step 4: Simplify right side
    7,637.12x = 59,529,313.92
  5. Step 5: Solve for x
    x = 59,529,313.92/7,637.12
  6. Step 6: Final answer
    x = 7,794.73

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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.