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Finding the Fourth Proportional to 5,603.12, 8,402.70 and 1,653.32

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Solution

The fourth proportional to 5,603.12, 8,402.70 and 1,653.32 is: 2,479.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,603.12 : 8,402.70 = 1,653.32 : x
  2. Step 2: Convert to fraction form
    5,603.12/8,402.70 = 1,653.32/x
  3. Step 3: Cross multiply
    5,603.12x = 8,402.70 × 1,653.32
  4. Step 4: Simplify right side
    5,603.12x = 13,892,372.97
  5. Step 5: Solve for x
    x = 13,892,372.97/5,603.12
  6. Step 6: Final answer
    x = 2,479.40

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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.