Home / 1,675.42-2,311.61-1,011.79

Finding the Fourth Proportional to 1,675.42, 2,311.61 and 1,011.79

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Solution

The fourth proportional to 1,675.42, 2,311.61 and 1,011.79 is: 1,395.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,675.42 : 2,311.61 = 1,011.79 : x
  2. Step 2: Convert to fraction form
    1,675.42/2,311.61 = 1,011.79/x
  3. Step 3: Cross multiply
    1,675.42x = 2,311.61 × 1,011.79
  4. Step 4: Simplify right side
    1,675.42x = 2,338,861.71
  5. Step 5: Solve for x
    x = 2,338,861.71/1,675.42
  6. Step 6: Final answer
    x = 1,395.99

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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.