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Finding the Fourth Proportional to 9,276.40, 13,925.40 and 4,891.60

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Solution

The fourth proportional to 9,276.40, 13,925.40 and 4,891.60 is: 7,343.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,276.40 : 13,925.40 = 4,891.60 : x
  2. Step 2: Convert to fraction form
    9,276.40/13,925.40 = 4,891.60/x
  3. Step 3: Cross multiply
    9,276.40x = 13,925.40 × 4,891.60
  4. Step 4: Simplify right side
    9,276.40x = 68,117,486.64
  5. Step 5: Solve for x
    x = 68,117,486.64/9,276.40
  6. Step 6: Final answer
    x = 7,343.10

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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.