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Finding the Fourth Proportional to 3,154.06, 4,730.28 and 1,917.20

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Solution

The fourth proportional to 3,154.06, 4,730.28 and 1,917.20 is: 2,875.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,154.06 : 4,730.28 = 1,917.20 : x
  2. Step 2: Convert to fraction form
    3,154.06/4,730.28 = 1,917.20/x
  3. Step 3: Cross multiply
    3,154.06x = 4,730.28 × 1,917.20
  4. Step 4: Simplify right side
    3,154.06x = 9,068,892.82
  5. Step 5: Solve for x
    x = 9,068,892.82/3,154.06
  6. Step 6: Final answer
    x = 2,875.31

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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.