Home / 1,555.51-2,146.70-926.41

Finding the Fourth Proportional to 1,555.51, 2,146.70 and 926.41

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Solution

The fourth proportional to 1,555.51, 2,146.70 and 926.41 is: 1,278.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.51 : 2,146.70 = 926.41 : x
  2. Step 2: Convert to fraction form
    1,555.51/2,146.70 = 926.41/x
  3. Step 3: Cross multiply
    1,555.51x = 2,146.70 × 926.41
  4. Step 4: Simplify right side
    1,555.51x = 1,988,724.35
  5. Step 5: Solve for x
    x = 1,988,724.35/1,555.51
  6. Step 6: Final answer
    x = 1,278.50

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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.