Home / 7,142.58-9,861.35-4,903.74

Finding the Fourth Proportional to 7,142.58, 9,861.35 and 4,903.74

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Solution

The fourth proportional to 7,142.58, 9,861.35 and 4,903.74 is: 6,770.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.58 : 9,861.35 = 4,903.74 : x
  2. Step 2: Convert to fraction form
    7,142.58/9,861.35 = 4,903.74/x
  3. Step 3: Cross multiply
    7,142.58x = 9,861.35 × 4,903.74
  4. Step 4: Simplify right side
    7,142.58x = 48,357,471.93
  5. Step 5: Solve for x
    x = 48,357,471.93/7,142.58
  6. Step 6: Final answer
    x = 6,770.31

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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.