Home / 1,248.07-1,861.10-1,186.76

Finding the Fourth Proportional to 1,248.07, 1,861.10 and 1,186.76

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Solution

The fourth proportional to 1,248.07, 1,861.10 and 1,186.76 is: 1,769.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248.07 : 1,861.10 = 1,186.76 : x
  2. Step 2: Convert to fraction form
    1,248.07/1,861.10 = 1,186.76/x
  3. Step 3: Cross multiply
    1,248.07x = 1,861.10 × 1,186.76
  4. Step 4: Simplify right side
    1,248.07x = 2,208,671.42
  5. Step 5: Solve for x
    x = 2,208,671.42/1,248.07
  6. Step 6: Final answer
    x = 1,769.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.