Home / 1,156.85-1,733.90-668.87

Finding the Fourth Proportional to 1,156.85, 1,733.90 and 668.87

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Solution

The fourth proportional to 1,156.85, 1,733.90 and 668.87 is: 1,002.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,156.85 : 1,733.90 = 668.87 : x
  2. Step 2: Convert to fraction form
    1,156.85/1,733.90 = 668.87/x
  3. Step 3: Cross multiply
    1,156.85x = 1,733.90 × 668.87
  4. Step 4: Simplify right side
    1,156.85x = 1,159,741.68
  5. Step 5: Solve for x
    x = 1,159,741.68/1,156.85
  6. Step 6: Final answer
    x = 1,002.50

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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.