Home / 1,485.81-2,050.11-896.40

Finding the Fourth Proportional to 1,485.81, 2,050.11 and 896.40

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Solution

The fourth proportional to 1,485.81, 2,050.11 and 896.40 is: 1,236.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.81 : 2,050.11 = 896.40 : x
  2. Step 2: Convert to fraction form
    1,485.81/2,050.11 = 896.40/x
  3. Step 3: Cross multiply
    1,485.81x = 2,050.11 × 896.40
  4. Step 4: Simplify right side
    1,485.81x = 1,837,718.60
  5. Step 5: Solve for x
    x = 1,837,718.60/1,485.81
  6. Step 6: Final answer
    x = 1,236.85

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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.