Home / 1,556.50-2,148.40-966.70

Finding the Fourth Proportional to 1,556.50, 2,148.40 and 966.70

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Solution

The fourth proportional to 1,556.50, 2,148.40 and 966.70 is: 1,334.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556.50 : 2,148.40 = 966.70 : x
  2. Step 2: Convert to fraction form
    1,556.50/2,148.40 = 966.70/x
  3. Step 3: Cross multiply
    1,556.50x = 2,148.40 × 966.70
  4. Step 4: Simplify right side
    1,556.50x = 2,076,858.28
  5. Step 5: Solve for x
    x = 2,076,858.28/1,556.50
  6. Step 6: Final answer
    x = 1,334.31

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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.