Home / 7,140.88-9,854.64-4,157.76

Finding the Fourth Proportional to 7,140.88, 9,854.64 and 4,157.76

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Solution

The fourth proportional to 7,140.88, 9,854.64 and 4,157.76 is: 5,737.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.88 : 9,854.64 = 4,157.76 : x
  2. Step 2: Convert to fraction form
    7,140.88/9,854.64 = 4,157.76/x
  3. Step 3: Cross multiply
    7,140.88x = 9,854.64 × 4,157.76
  4. Step 4: Simplify right side
    7,140.88x = 40,973,228.01
  5. Step 5: Solve for x
    x = 40,973,228.01/7,140.88
  6. Step 6: Final answer
    x = 5,737.84

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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.