Home / 7,345.77-10,137.13-3,988.56

Finding the Fourth Proportional to 7,345.77, 10,137.13 and 3,988.56

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Solution

The fourth proportional to 7,345.77, 10,137.13 and 3,988.56 is: 5,504.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,345.77 : 10,137.13 = 3,988.56 : x
  2. Step 2: Convert to fraction form
    7,345.77/10,137.13 = 3,988.56/x
  3. Step 3: Cross multiply
    7,345.77x = 10,137.13 × 3,988.56
  4. Step 4: Simplify right side
    7,345.77x = 40,432,544.69
  5. Step 5: Solve for x
    x = 40,432,544.69/7,345.77
  6. Step 6: Final answer
    x = 5,504.19

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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.