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Finding the Fourth Proportional to 6,984.77, 9,639.14 and 3,840.93

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Solution

The fourth proportional to 6,984.77, 9,639.14 and 3,840.93 is: 5,300.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,984.77 : 9,639.14 = 3,840.93 : x
  2. Step 2: Convert to fraction form
    6,984.77/9,639.14 = 3,840.93/x
  3. Step 3: Cross multiply
    6,984.77x = 9,639.14 × 3,840.93
  4. Step 4: Simplify right side
    6,984.77x = 37,023,242.80
  5. Step 5: Solve for x
    x = 37,023,242.80/6,984.77
  6. Step 6: Final answer
    x = 5,300.57

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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.