Home / 3,368.50-4,648.56-1,971.28

Finding the Fourth Proportional to 3,368.50, 4,648.56 and 1,971.28

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Solution

The fourth proportional to 3,368.50, 4,648.56 and 1,971.28 is: 2,720.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,368.50 : 4,648.56 = 1,971.28 : x
  2. Step 2: Convert to fraction form
    3,368.50/4,648.56 = 1,971.28/x
  3. Step 3: Cross multiply
    3,368.50x = 4,648.56 × 1,971.28
  4. Step 4: Simplify right side
    3,368.50x = 9,163,613.36
  5. Step 5: Solve for x
    x = 9,163,613.36/3,368.50
  6. Step 6: Final answer
    x = 2,720.38

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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.