Home / 1,588.46-2,190.87-1,391.63

Finding the Fourth Proportional to 1,588.46, 2,190.87 and 1,391.63

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Solution

The fourth proportional to 1,588.46, 2,190.87 and 1,391.63 is: 1,919.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,588.46 : 2,190.87 = 1,391.63 : x
  2. Step 2: Convert to fraction form
    1,588.46/2,190.87 = 1,391.63/x
  3. Step 3: Cross multiply
    1,588.46x = 2,190.87 × 1,391.63
  4. Step 4: Simplify right side
    1,588.46x = 3,048,885.70
  5. Step 5: Solve for x
    x = 3,048,885.70/1,588.46
  6. Step 6: Final answer
    x = 1,919.40

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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.