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Finding the Fourth Proportional to 6,379.60, 9,569.40 and 1,699.60

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Solution

The fourth proportional to 6,379.60, 9,569.40 and 1,699.60 is: 2,549.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,379.60 : 9,569.40 = 1,699.60 : x
  2. Step 2: Convert to fraction form
    6,379.60/9,569.40 = 1,699.60/x
  3. Step 3: Cross multiply
    6,379.60x = 9,569.40 × 1,699.60
  4. Step 4: Simplify right side
    6,379.60x = 16,264,152.24
  5. Step 5: Solve for x
    x = 16,264,152.24/6,379.60
  6. Step 6: Final answer
    x = 2,549.40

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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.