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Finding the Fourth Proportional to 9,840.60, 13,579.64 and 5,364.26

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Solution

The fourth proportional to 9,840.60, 13,579.64 and 5,364.26 is: 7,402.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,840.60 : 13,579.64 = 5,364.26 : x
  2. Step 2: Convert to fraction form
    9,840.60/13,579.64 = 5,364.26/x
  3. Step 3: Cross multiply
    9,840.60x = 13,579.64 × 5,364.26
  4. Step 4: Simplify right side
    9,840.60x = 72,844,719.67
  5. Step 5: Solve for x
    x = 72,844,719.67/9,840.60
  6. Step 6: Final answer
    x = 7,402.47

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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.