Home / 3,147.13-4,720.59-1,689.13

Finding the Fourth Proportional to 3,147.13, 4,720.59 and 1,689.13

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Solution

The fourth proportional to 3,147.13, 4,720.59 and 1,689.13 is: 2,533.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.13 : 4,720.59 = 1,689.13 : x
  2. Step 2: Convert to fraction form
    3,147.13/4,720.59 = 1,689.13/x
  3. Step 3: Cross multiply
    3,147.13x = 4,720.59 × 1,689.13
  4. Step 4: Simplify right side
    3,147.13x = 7,973,690.19
  5. Step 5: Solve for x
    x = 7,973,690.19/3,147.13
  6. Step 6: Final answer
    x = 2,533.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.