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Finding the Fourth Proportional to 9,078.84, 12,528.84 and 5,101.32

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Solution

The fourth proportional to 9,078.84, 12,528.84 and 5,101.32 is: 7,039.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,078.84 : 12,528.84 = 5,101.32 : x
  2. Step 2: Convert to fraction form
    9,078.84/12,528.84 = 5,101.32/x
  3. Step 3: Cross multiply
    9,078.84x = 12,528.84 × 5,101.32
  4. Step 4: Simplify right side
    9,078.84x = 63,913,622.07
  5. Step 5: Solve for x
    x = 63,913,622.07/9,078.84
  6. Step 6: Final answer
    x = 7,039.84

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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.