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Finding the Fourth Proportional to 8,369.64, 12,558.54 and 5,920.20

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Solution

The fourth proportional to 8,369.64, 12,558.54 and 5,920.20 is: 8,883.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,369.64 : 12,558.54 = 5,920.20 : x
  2. Step 2: Convert to fraction form
    8,369.64/12,558.54 = 5,920.20/x
  3. Step 3: Cross multiply
    8,369.64x = 12,558.54 × 5,920.20
  4. Step 4: Simplify right side
    8,369.64x = 74,349,068.51
  5. Step 5: Solve for x
    x = 74,349,068.51/8,369.64
  6. Step 6: Final answer
    x = 8,883.19

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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.