Home / 9,784.38-13,500.94-6,428.55

Finding the Fourth Proportional to 9,784.38, 13,500.94 and 6,428.55

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Solution

The fourth proportional to 9,784.38, 13,500.94 and 6,428.55 is: 8,870.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,784.38 : 13,500.94 = 6,428.55 : x
  2. Step 2: Convert to fraction form
    9,784.38/13,500.94 = 6,428.55/x
  3. Step 3: Cross multiply
    9,784.38x = 13,500.94 × 6,428.55
  4. Step 4: Simplify right side
    9,784.38x = 86,791,467.84
  5. Step 5: Solve for x
    x = 86,791,467.84/9,784.38
  6. Step 6: Final answer
    x = 8,870.41

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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.