Home / 4,392.49-6,587.78-1,390.76

Finding the Fourth Proportional to 4,392.49, 6,587.78 and 1,390.76

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Solution

The fourth proportional to 4,392.49, 6,587.78 and 1,390.76 is: 2,085.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,392.49 : 6,587.78 = 1,390.76 : x
  2. Step 2: Convert to fraction form
    4,392.49/6,587.78 = 1,390.76/x
  3. Step 3: Cross multiply
    4,392.49x = 6,587.78 × 1,390.76
  4. Step 4: Simplify right side
    4,392.49x = 9,162,015.70
  5. Step 5: Solve for x
    x = 9,162,015.70/4,392.49
  6. Step 6: Final answer
    x = 2,085.84

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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.