Home / 1,530.11-2,111.93-932.81

Finding the Fourth Proportional to 1,530.11, 2,111.93 and 932.81

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Solution

The fourth proportional to 1,530.11, 2,111.93 and 932.81 is: 1,287.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,530.11 : 2,111.93 = 932.81 : x
  2. Step 2: Convert to fraction form
    1,530.11/2,111.93 = 932.81/x
  3. Step 3: Cross multiply
    1,530.11x = 2,111.93 × 932.81
  4. Step 4: Simplify right side
    1,530.11x = 1,970,014.20
  5. Step 5: Solve for x
    x = 1,970,014.20/1,530.11
  6. Step 6: Final answer
    x = 1,287.50

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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.