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Finding the Fourth Proportional to 1,588.54, 2,191.77 and 916.18

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Solution

The fourth proportional to 1,588.54, 2,191.77 and 916.18 is: 1,264.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,588.54 : 2,191.77 = 916.18 : x
  2. Step 2: Convert to fraction form
    1,588.54/2,191.77 = 916.18/x
  3. Step 3: Cross multiply
    1,588.54x = 2,191.77 × 916.18
  4. Step 4: Simplify right side
    1,588.54x = 2,008,055.84
  5. Step 5: Solve for x
    x = 2,008,055.84/1,588.54
  6. Step 6: Final answer
    x = 1,264.09

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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.