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Finding the Fourth Proportional to 6,855.78, 10,300.08 and 4,395.40

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Solution

The fourth proportional to 6,855.78, 10,300.08 and 4,395.40 is: 6,603.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,855.78 : 10,300.08 = 4,395.40 : x
  2. Step 2: Convert to fraction form
    6,855.78/10,300.08 = 4,395.40/x
  3. Step 3: Cross multiply
    6,855.78x = 10,300.08 × 4,395.40
  4. Step 4: Simplify right side
    6,855.78x = 45,272,971.63
  5. Step 5: Solve for x
    x = 45,272,971.63/6,855.78
  6. Step 6: Final answer
    x = 6,603.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.