Home / 5,157.36-7,117.08-2,888.66

Finding the Fourth Proportional to 5,157.36, 7,117.08 and 2,888.66

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Solution

The fourth proportional to 5,157.36, 7,117.08 and 2,888.66 is: 3,986.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.36 : 7,117.08 = 2,888.66 : x
  2. Step 2: Convert to fraction form
    5,157.36/7,117.08 = 2,888.66/x
  3. Step 3: Cross multiply
    5,157.36x = 7,117.08 × 2,888.66
  4. Step 4: Simplify right side
    5,157.36x = 20,558,824.31
  5. Step 5: Solve for x
    x = 20,558,824.31/5,157.36
  6. Step 6: Final answer
    x = 3,986.31

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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.