Home / 1,856.79-2,784.32-1,077.02

Finding the Fourth Proportional to 1,856.79, 2,784.32 and 1,077.02

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Solution

The fourth proportional to 1,856.79, 2,784.32 and 1,077.02 is: 1,615.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,856.79 : 2,784.32 = 1,077.02 : x
  2. Step 2: Convert to fraction form
    1,856.79/2,784.32 = 1,077.02/x
  3. Step 3: Cross multiply
    1,856.79x = 2,784.32 × 1,077.02
  4. Step 4: Simplify right side
    1,856.79x = 2,998,753.06
  5. Step 5: Solve for x
    x = 2,998,753.06/1,856.79
  6. Step 6: Final answer
    x = 1,615.02

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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.