Home / 3,490.32-4,816.71-1,918.47

Finding the Fourth Proportional to 3,490.32, 4,816.71 and 1,918.47

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Solution

The fourth proportional to 3,490.32, 4,816.71 and 1,918.47 is: 2,647.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,490.32 : 4,816.71 = 1,918.47 : x
  2. Step 2: Convert to fraction form
    3,490.32/4,816.71 = 1,918.47/x
  3. Step 3: Cross multiply
    3,490.32x = 4,816.71 × 1,918.47
  4. Step 4: Simplify right side
    3,490.32x = 9,240,713.63
  5. Step 5: Solve for x
    x = 9,240,713.63/3,490.32
  6. Step 6: Final answer
    x = 2,647.53

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1.5x scale

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.