Home / 3,490.18-4,816.47-1,918.30

Finding the Fourth Proportional to 3,490.18, 4,816.47 and 1,918.30

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Solution

The fourth proportional to 3,490.18, 4,816.47 and 1,918.30 is: 2,647.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,490.18 : 4,816.47 = 1,918.30 : x
  2. Step 2: Convert to fraction form
    3,490.18/4,816.47 = 1,918.30/x
  3. Step 3: Cross multiply
    3,490.18x = 4,816.47 × 1,918.30
  4. Step 4: Simplify right side
    3,490.18x = 9,239,434.40
  5. Step 5: Solve for x
    x = 9,239,434.40/3,490.18
  6. Step 6: Final answer
    x = 2,647.27

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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.