Home / 3,117.44-4,302.40-1,720.32

Finding the Fourth Proportional to 3,117.44, 4,302.40 and 1,720.32

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Solution

The fourth proportional to 3,117.44, 4,302.40 and 1,720.32 is: 2,374.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.44 : 4,302.40 = 1,720.32 : x
  2. Step 2: Convert to fraction form
    3,117.44/4,302.40 = 1,720.32/x
  3. Step 3: Cross multiply
    3,117.44x = 4,302.40 × 1,720.32
  4. Step 4: Simplify right side
    3,117.44x = 7,401,504.77
  5. Step 5: Solve for x
    x = 7,401,504.77/3,117.44
  6. Step 6: Final answer
    x = 2,374.23

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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.