Home / 2,110.08-2,911.86-1,178.76

Finding the Fourth Proportional to 2,110.08, 2,911.86 and 1,178.76

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Solution

The fourth proportional to 2,110.08, 2,911.86 and 1,178.76 is: 1,626.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,110.08 : 2,911.86 = 1,178.76 : x
  2. Step 2: Convert to fraction form
    2,110.08/2,911.86 = 1,178.76/x
  3. Step 3: Cross multiply
    2,110.08x = 2,911.86 × 1,178.76
  4. Step 4: Simplify right side
    2,110.08x = 3,432,384.09
  5. Step 5: Solve for x
    x = 3,432,384.09/2,110.08
  6. Step 6: Final answer
    x = 1,626.66

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Half scale
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Double scale
Find fourth proportional to 2,111.08, 2,913.24 and 1,179.76
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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.