Home / 1,585.19-2,187.72-913.01

Finding the Fourth Proportional to 1,585.19, 2,187.72 and 913.01

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Solution

The fourth proportional to 1,585.19, 2,187.72 and 913.01 is: 1,260.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585.19 : 2,187.72 = 913.01 : x
  2. Step 2: Convert to fraction form
    1,585.19/2,187.72 = 913.01/x
  3. Step 3: Cross multiply
    1,585.19x = 2,187.72 × 913.01
  4. Step 4: Simplify right side
    1,585.19x = 1,997,422.09
  5. Step 5: Solve for x
    x = 1,997,422.09/1,585.19
  6. Step 6: Final answer
    x = 1,260.05

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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.