Home / 7,131.83-9,841.95-3,988.01

Finding the Fourth Proportional to 7,131.83, 9,841.95 and 3,988.01

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Solution

The fourth proportional to 7,131.83, 9,841.95 and 3,988.01 is: 5,503.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,131.83 : 9,841.95 = 3,988.01 : x
  2. Step 2: Convert to fraction form
    7,131.83/9,841.95 = 3,988.01/x
  3. Step 3: Cross multiply
    7,131.83x = 9,841.95 × 3,988.01
  4. Step 4: Simplify right side
    7,131.83x = 39,249,745.81
  5. Step 5: Solve for x
    x = 39,249,745.81/7,131.83
  6. Step 6: Final answer
    x = 5,503.46

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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.