Home / 1,585.19-2,186.31-1,025.71

Finding the Fourth Proportional to 1,585.19, 2,186.31 and 1,025.71

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Solution

The fourth proportional to 1,585.19, 2,186.31 and 1,025.71 is: 1,414.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585.19 : 2,186.31 = 1,025.71 : x
  2. Step 2: Convert to fraction form
    1,585.19/2,186.31 = 1,025.71/x
  3. Step 3: Cross multiply
    1,585.19x = 2,186.31 × 1,025.71
  4. Step 4: Simplify right side
    1,585.19x = 2,242,520.03
  5. Step 5: Solve for x
    x = 2,242,520.03/1,585.19
  6. Step 6: Final answer
    x = 1,414.67

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Half scale
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Double scale
Find fourth proportional to 1,586.19, 2,187.69 and 1,026.71
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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.