Home / 7,117.80-9,822.36-3,973.92

Finding the Fourth Proportional to 7,117.80, 9,822.36 and 3,973.92

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Solution

The fourth proportional to 7,117.80, 9,822.36 and 3,973.92 is: 5,483.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.80 : 9,822.36 = 3,973.92 : x
  2. Step 2: Convert to fraction form
    7,117.80/9,822.36 = 3,973.92/x
  3. Step 3: Cross multiply
    7,117.80x = 9,822.36 × 3,973.92
  4. Step 4: Simplify right side
    7,117.80x = 39,033,272.85
  5. Step 5: Solve for x
    x = 39,033,272.85/7,117.80
  6. Step 6: Final answer
    x = 5,483.90

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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.