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Finding the Fourth Proportional to 4,690.49, 7,035.75 and 1,917.17

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Solution

The fourth proportional to 4,690.49, 7,035.75 and 1,917.17 is: 2,875.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,690.49 : 7,035.75 = 1,917.17 : x
  2. Step 2: Convert to fraction form
    4,690.49/7,035.75 = 1,917.17/x
  3. Step 3: Cross multiply
    4,690.49x = 7,035.75 × 1,917.17
  4. Step 4: Simplify right side
    4,690.49x = 13,488,693.65
  5. Step 5: Solve for x
    x = 13,488,693.65/4,690.49
  6. Step 6: Final answer
    x = 2,875.75

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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.