Home / 1,917.07-2,873.78-617.63

Finding the Fourth Proportional to 1,917.07, 2,873.78 and 617.63

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Solution

The fourth proportional to 1,917.07, 2,873.78 and 617.63 is: 925.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.07 : 2,873.78 = 617.63 : x
  2. Step 2: Convert to fraction form
    1,917.07/2,873.78 = 617.63/x
  3. Step 3: Cross multiply
    1,917.07x = 2,873.78 × 617.63
  4. Step 4: Simplify right side
    1,917.07x = 1,774,915.28
  5. Step 5: Solve for x
    x = 1,774,915.28/1,917.07
  6. Step 6: Final answer
    x = 925.85

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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.