Home / 5,157.04-7,117.06-2,918.90

Finding the Fourth Proportional to 5,157.04, 7,117.06 and 2,918.90

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Solution

The fourth proportional to 5,157.04, 7,117.06 and 2,918.90 is: 4,028.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.04 : 7,117.06 = 2,918.90 : x
  2. Step 2: Convert to fraction form
    5,157.04/7,117.06 = 2,918.90/x
  3. Step 3: Cross multiply
    5,157.04x = 7,117.06 × 2,918.90
  4. Step 4: Simplify right side
    5,157.04x = 20,773,986.43
  5. Step 5: Solve for x
    x = 20,773,986.43/5,157.04
  6. Step 6: Final answer
    x = 4,028.28

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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.