Home / 1,946.76-2,686.49-1,107.45

Finding the Fourth Proportional to 1,946.76, 2,686.49 and 1,107.45

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Solution

The fourth proportional to 1,946.76, 2,686.49 and 1,107.45 is: 1,528.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.76 : 2,686.49 = 1,107.45 : x
  2. Step 2: Convert to fraction form
    1,946.76/2,686.49 = 1,107.45/x
  3. Step 3: Cross multiply
    1,946.76x = 2,686.49 × 1,107.45
  4. Step 4: Simplify right side
    1,946.76x = 2,975,147.81
  5. Step 5: Solve for x
    x = 2,975,147.81/1,946.76
  6. Step 6: Final answer
    x = 1,528.26

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Half scale
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Double scale
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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.