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Finding the Fourth Proportional to 1,582.02, 2,182.86 and 918.96

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Solution

The fourth proportional to 1,582.02, 2,182.86 and 918.96 is: 1,267.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,582.02 : 2,182.86 = 918.96 : x
  2. Step 2: Convert to fraction form
    1,582.02/2,182.86 = 918.96/x
  3. Step 3: Cross multiply
    1,582.02x = 2,182.86 × 918.96
  4. Step 4: Simplify right side
    1,582.02x = 2,005,961.03
  5. Step 5: Solve for x
    x = 2,005,961.03/1,582.02
  6. Step 6: Final answer
    x = 1,267.97

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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.