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Finding the Fourth Proportional to 4,368, 6,553.28 and 1,290.08

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Solution

The fourth proportional to 4,368, 6,553.28 and 1,290.08 is: 1,935.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,368 : 6,553.28 = 1,290.08 : x
  2. Step 2: Convert to fraction form
    4,368/6,553.28 = 1,290.08/x
  3. Step 3: Cross multiply
    4,368x = 6,553.28 × 1,290.08
  4. Step 4: Simplify right side
    4,368x = 8,454,255.46
  5. Step 5: Solve for x
    x = 8,454,255.46/4,368
  6. Step 6: Final answer
    x = 1,935.50

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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.