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Finding the Fourth Proportional to 9,320.64, 12,863.64 and 5,784.38

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Solution

The fourth proportional to 9,320.64, 12,863.64 and 5,784.38 is: 7,983.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,320.64 : 12,863.64 = 5,784.38 : x
  2. Step 2: Convert to fraction form
    9,320.64/12,863.64 = 5,784.38/x
  3. Step 3: Cross multiply
    9,320.64x = 12,863.64 × 5,784.38
  4. Step 4: Simplify right side
    9,320.64x = 74,408,117.63
  5. Step 5: Solve for x
    x = 74,408,117.63/9,320.64
  6. Step 6: Final answer
    x = 7,983.16

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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.