Home / 1,931.08-2,664.74-1,091.87

Finding the Fourth Proportional to 1,931.08, 2,664.74 and 1,091.87

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Solution

The fourth proportional to 1,931.08, 2,664.74 and 1,091.87 is: 1,506.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.08 : 2,664.74 = 1,091.87 : x
  2. Step 2: Convert to fraction form
    1,931.08/2,664.74 = 1,091.87/x
  3. Step 3: Cross multiply
    1,931.08x = 2,664.74 × 1,091.87
  4. Step 4: Simplify right side
    1,931.08x = 2,909,549.66
  5. Step 5: Solve for x
    x = 2,909,549.66/1,931.08
  6. Step 6: Final answer
    x = 1,506.70

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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.