Home / 7,988.78-11,984.18-4,285.94

Finding the Fourth Proportional to 7,988.78, 11,984.18 and 4,285.94

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Solution

The fourth proportional to 7,988.78, 11,984.18 and 4,285.94 is: 6,429.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.78 : 11,984.18 = 4,285.94 : x
  2. Step 2: Convert to fraction form
    7,988.78/11,984.18 = 4,285.94/x
  3. Step 3: Cross multiply
    7,988.78x = 11,984.18 × 4,285.94
  4. Step 4: Simplify right side
    7,988.78x = 51,363,395.08
  5. Step 5: Solve for x
    x = 51,363,395.08/7,988.78
  6. Step 6: Final answer
    x = 6,429.45

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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.