Home / 5,240.16-7,861.32-1,777.68

Finding the Fourth Proportional to 5,240.16, 7,861.32 and 1,777.68

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Solution

The fourth proportional to 5,240.16, 7,861.32 and 1,777.68 is: 2,666.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,240.16 : 7,861.32 = 1,777.68 : x
  2. Step 2: Convert to fraction form
    5,240.16/7,861.32 = 1,777.68/x
  3. Step 3: Cross multiply
    5,240.16x = 7,861.32 × 1,777.68
  4. Step 4: Simplify right side
    5,240.16x = 13,974,911.34
  5. Step 5: Solve for x
    x = 13,974,911.34/5,240.16
  6. Step 6: Final answer
    x = 2,666.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.