Home / 1,902.96-2,626.32-1,117.20

Finding the Fourth Proportional to 1,902.96, 2,626.32 and 1,117.20

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Solution

The fourth proportional to 1,902.96, 2,626.32 and 1,117.20 is: 1,541.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,902.96 : 2,626.32 = 1,117.20 : x
  2. Step 2: Convert to fraction form
    1,902.96/2,626.32 = 1,117.20/x
  3. Step 3: Cross multiply
    1,902.96x = 2,626.32 × 1,117.20
  4. Step 4: Simplify right side
    1,902.96x = 2,934,124.70
  5. Step 5: Solve for x
    x = 2,934,124.70/1,902.96
  6. Step 6: Final answer
    x = 1,541.87

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Half scale
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Double scale
Find fourth proportional to 1,903.96, 2,627.70 and 1,118.20
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.