Home / 1,856.12-2,784.50-623.66

Finding the Fourth Proportional to 1,856.12, 2,784.50 and 623.66

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Solution

The fourth proportional to 1,856.12, 2,784.50 and 623.66 is: 935.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,856.12 : 2,784.50 = 623.66 : x
  2. Step 2: Convert to fraction form
    1,856.12/2,784.50 = 623.66/x
  3. Step 3: Cross multiply
    1,856.12x = 2,784.50 × 623.66
  4. Step 4: Simplify right side
    1,856.12x = 1,736,581.27
  5. Step 5: Solve for x
    x = 1,736,581.27/1,856.12
  6. Step 6: Final answer
    x = 935.60

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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.