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Finding the Fourth Proportional to 5,603.40, 8,405.10 and 1,707.84

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Solution

The fourth proportional to 5,603.40, 8,405.10 and 1,707.84 is: 2,561.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,603.40 : 8,405.10 = 1,707.84 : x
  2. Step 2: Convert to fraction form
    5,603.40/8,405.10 = 1,707.84/x
  3. Step 3: Cross multiply
    5,603.40x = 8,405.10 × 1,707.84
  4. Step 4: Simplify right side
    5,603.40x = 14,354,565.98
  5. Step 5: Solve for x
    x = 14,354,565.98/5,603.40
  6. Step 6: Final answer
    x = 2,561.76

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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.