Home / 1,901.51-2,623.28-1,115.81

Finding the Fourth Proportional to 1,901.51, 2,623.28 and 1,115.81

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Solution

The fourth proportional to 1,901.51, 2,623.28 and 1,115.81 is: 1,539.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,901.51 : 2,623.28 = 1,115.81 : x
  2. Step 2: Convert to fraction form
    1,901.51/2,623.28 = 1,115.81/x
  3. Step 3: Cross multiply
    1,901.51x = 2,623.28 × 1,115.81
  4. Step 4: Simplify right side
    1,901.51x = 2,927,063.36
  5. Step 5: Solve for x
    x = 2,927,063.36/1,901.51
  6. Step 6: Final answer
    x = 1,539.34

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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.