Home / 7,176.36-9,903.52-3,989.93

Finding the Fourth Proportional to 7,176.36, 9,903.52 and 3,989.93

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Solution

The fourth proportional to 7,176.36, 9,903.52 and 3,989.93 is: 5,506.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,176.36 : 9,903.52 = 3,989.93 : x
  2. Step 2: Convert to fraction form
    7,176.36/9,903.52 = 3,989.93/x
  3. Step 3: Cross multiply
    7,176.36x = 9,903.52 × 3,989.93
  4. Step 4: Simplify right side
    7,176.36x = 39,514,284.58
  5. Step 5: Solve for x
    x = 39,514,284.58/7,176.36
  6. Step 6: Final answer
    x = 5,506.17

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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.