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Finding the Fourth Proportional to 3,710, 5,120.12 and 2,054.32

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Solution

The fourth proportional to 3,710, 5,120.12 and 2,054.32 is: 2,835.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,710 : 5,120.12 = 2,054.32 : x
  2. Step 2: Convert to fraction form
    3,710/5,120.12 = 2,054.32/x
  3. Step 3: Cross multiply
    3,710x = 5,120.12 × 2,054.32
  4. Step 4: Simplify right side
    3,710x = 10,518,364.92
  5. Step 5: Solve for x
    x = 10,518,364.92/3,710
  6. Step 6: Final answer
    x = 2,835.14

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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.