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Finding the Fourth Proportional to 5,607.92, 8,412.78 and 1,712

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Solution

The fourth proportional to 5,607.92, 8,412.78 and 1,712 is: 2,568.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,607.92 : 8,412.78 = 1,712 : x
  2. Step 2: Convert to fraction form
    5,607.92/8,412.78 = 1,712/x
  3. Step 3: Cross multiply
    5,607.92x = 8,412.78 × 1,712
  4. Step 4: Simplify right side
    5,607.92x = 14,402,679.36
  5. Step 5: Solve for x
    x = 14,402,679.36/5,607.92
  6. Step 6: Final answer
    x = 2,568.27

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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.