Home / 7,117.50-9,822.20-3,973.71

Finding the Fourth Proportional to 7,117.50, 9,822.20 and 3,973.71

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Solution

The fourth proportional to 7,117.50, 9,822.20 and 3,973.71 is: 5,483.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.50 : 9,822.20 = 3,973.71 : x
  2. Step 2: Convert to fraction form
    7,117.50/9,822.20 = 3,973.71/x
  3. Step 3: Cross multiply
    7,117.50x = 9,822.20 × 3,973.71
  4. Step 4: Simplify right side
    7,117.50x = 39,030,554.49
  5. Step 5: Solve for x
    x = 39,030,554.49/7,117.50
  6. Step 6: Final answer
    x = 5,483.74

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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.