Home / 1,489.77-2,056.14-1,415.43

Finding the Fourth Proportional to 1,489.77, 2,056.14 and 1,415.43

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Solution

The fourth proportional to 1,489.77, 2,056.14 and 1,415.43 is: 1,953.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.77 : 2,056.14 = 1,415.43 : x
  2. Step 2: Convert to fraction form
    1,489.77/2,056.14 = 1,415.43/x
  3. Step 3: Cross multiply
    1,489.77x = 2,056.14 × 1,415.43
  4. Step 4: Simplify right side
    1,489.77x = 2,910,322.24
  5. Step 5: Solve for x
    x = 2,910,322.24/1,489.77
  6. Step 6: Final answer
    x = 1,953.54

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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.