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Finding the Fourth Proportional to 7,460.12, 11,190.12 and 1,913.44

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Solution

The fourth proportional to 7,460.12, 11,190.12 and 1,913.44 is: 2,870.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,460.12 : 11,190.12 = 1,913.44 : x
  2. Step 2: Convert to fraction form
    7,460.12/11,190.12 = 1,913.44/x
  3. Step 3: Cross multiply
    7,460.12x = 11,190.12 × 1,913.44
  4. Step 4: Simplify right side
    7,460.12x = 21,411,623.21
  5. Step 5: Solve for x
    x = 21,411,623.21/7,460.12
  6. Step 6: Final answer
    x = 2,870.14

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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.