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Finding the Fourth Proportional to 1,487.45, 2,050.81 and 955.39

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Solution

The fourth proportional to 1,487.45, 2,050.81 and 955.39 is: 1,317.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.45 : 2,050.81 = 955.39 : x
  2. Step 2: Convert to fraction form
    1,487.45/2,050.81 = 955.39/x
  3. Step 3: Cross multiply
    1,487.45x = 2,050.81 × 955.39
  4. Step 4: Simplify right side
    1,487.45x = 1,959,323.37
  5. Step 5: Solve for x
    x = 1,959,323.37/1,487.45
  6. Step 6: Final answer
    x = 1,317.24

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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.