Home / 1,439.81-2,162.12-1,258.77

Finding the Fourth Proportional to 1,439.81, 2,162.12 and 1,258.77

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Solution

The fourth proportional to 1,439.81, 2,162.12 and 1,258.77 is: 1,890.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.81 : 2,162.12 = 1,258.77 : x
  2. Step 2: Convert to fraction form
    1,439.81/2,162.12 = 1,258.77/x
  3. Step 3: Cross multiply
    1,439.81x = 2,162.12 × 1,258.77
  4. Step 4: Simplify right side
    1,439.81x = 2,721,605.50
  5. Step 5: Solve for x
    x = 2,721,605.50/1,439.81
  6. Step 6: Final answer
    x = 1,890.26

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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.