Home / 9,778.64-13,490.98-6,423.26

Finding the Fourth Proportional to 9,778.64, 13,490.98 and 6,423.26

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Solution

The fourth proportional to 9,778.64, 13,490.98 and 6,423.26 is: 8,861.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,778.64 : 13,490.98 = 6,423.26 : x
  2. Step 2: Convert to fraction form
    9,778.64/13,490.98 = 6,423.26/x
  3. Step 3: Cross multiply
    9,778.64x = 13,490.98 × 6,423.26
  4. Step 4: Simplify right side
    9,778.64x = 86,656,072.19
  5. Step 5: Solve for x
    x = 86,656,072.19/9,778.64
  6. Step 6: Final answer
    x = 8,861.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.