Home / 2,913.91-4,018.48-1,917.46

Finding the Fourth Proportional to 2,913.91, 4,018.48 and 1,917.46

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Solution

The fourth proportional to 2,913.91, 4,018.48 and 1,917.46 is: 2,644.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.91 : 4,018.48 = 1,917.46 : x
  2. Step 2: Convert to fraction form
    2,913.91/4,018.48 = 1,917.46/x
  3. Step 3: Cross multiply
    2,913.91x = 4,018.48 × 1,917.46
  4. Step 4: Simplify right side
    2,913.91x = 7,705,252.29
  5. Step 5: Solve for x
    x = 7,705,252.29/2,913.91
  6. Step 6: Final answer
    x = 2,644.30

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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.