Home / 1,391.15-2,068.82-1,347.35

Finding the Fourth Proportional to 1,391.15, 2,068.82 and 1,347.35

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Solution

The fourth proportional to 1,391.15, 2,068.82 and 1,347.35 is: 2,003.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391.15 : 2,068.82 = 1,347.35 : x
  2. Step 2: Convert to fraction form
    1,391.15/2,068.82 = 1,347.35/x
  3. Step 3: Cross multiply
    1,391.15x = 2,068.82 × 1,347.35
  4. Step 4: Simplify right side
    1,391.15x = 2,787,412.60
  5. Step 5: Solve for x
    x = 2,787,412.60/1,391.15
  6. Step 6: Final answer
    x = 2,003.67

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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.