Home / 7,117.80-9,822.55-3,973.98

Finding the Fourth Proportional to 7,117.80, 9,822.55 and 3,973.98

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Solution

The fourth proportional to 7,117.80, 9,822.55 and 3,973.98 is: 5,484.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.80 : 9,822.55 = 3,973.98 : x
  2. Step 2: Convert to fraction form
    7,117.80/9,822.55 = 3,973.98/x
  3. Step 3: Cross multiply
    7,117.80x = 9,822.55 × 3,973.98
  4. Step 4: Simplify right side
    7,117.80x = 39,034,617.25
  5. Step 5: Solve for x
    x = 39,034,617.25/7,117.80
  6. Step 6: Final answer
    x = 5,484.08

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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.