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Finding the Fourth Proportional to 1,584.50, 2,187.05 and 955.08

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Solution

The fourth proportional to 1,584.50, 2,187.05 and 955.08 is: 1,318.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,584.50 : 2,187.05 = 955.08 : x
  2. Step 2: Convert to fraction form
    1,584.50/2,187.05 = 955.08/x
  3. Step 3: Cross multiply
    1,584.50x = 2,187.05 × 955.08
  4. Step 4: Simplify right side
    1,584.50x = 2,088,802.94
  5. Step 5: Solve for x
    x = 2,088,802.94/1,584.50
  6. Step 6: Final answer
    x = 1,318.28

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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.