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Finding the Fourth Proportional to 1,856.48, 2,785.08 and 624.28

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Solution

The fourth proportional to 1,856.48, 2,785.08 and 624.28 is: 936.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,856.48 : 2,785.08 = 624.28 : x
  2. Step 2: Convert to fraction form
    1,856.48/2,785.08 = 624.28/x
  3. Step 3: Cross multiply
    1,856.48x = 2,785.08 × 624.28
  4. Step 4: Simplify right side
    1,856.48x = 1,738,669.74
  5. Step 5: Solve for x
    x = 1,738,669.74/1,856.48
  6. Step 6: Final answer
    x = 936.54

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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.