Home / 7,157.12-9,880.54-5,560.20

Finding the Fourth Proportional to 7,157.12, 9,880.54 and 5,560.20

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Solution

The fourth proportional to 7,157.12, 9,880.54 and 5,560.20 is: 7,675.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,157.12 : 9,880.54 = 5,560.20 : x
  2. Step 2: Convert to fraction form
    7,157.12/9,880.54 = 5,560.20/x
  3. Step 3: Cross multiply
    7,157.12x = 9,880.54 × 5,560.20
  4. Step 4: Simplify right side
    7,157.12x = 54,937,778.51
  5. Step 5: Solve for x
    x = 54,937,778.51/7,157.12
  6. Step 6: Final answer
    x = 7,675.96

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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.