Home / 1,856.12-2,784.62-557.58

Finding the Fourth Proportional to 1,856.12, 2,784.62 and 557.58

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Solution

The fourth proportional to 1,856.12, 2,784.62 and 557.58 is: 836.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,856.12 : 2,784.62 = 557.58 : x
  2. Step 2: Convert to fraction form
    1,856.12/2,784.62 = 557.58/x
  3. Step 3: Cross multiply
    1,856.12x = 2,784.62 × 557.58
  4. Step 4: Simplify right side
    1,856.12x = 1,552,660.26
  5. Step 5: Solve for x
    x = 1,552,660.26/1,856.12
  6. Step 6: Final answer
    x = 836.51

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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.