Home / 1,457.19-2,011.02-890.27

Finding the Fourth Proportional to 1,457.19, 2,011.02 and 890.27

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Solution

The fourth proportional to 1,457.19, 2,011.02 and 890.27 is: 1,228.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,457.19 : 2,011.02 = 890.27 : x
  2. Step 2: Convert to fraction form
    1,457.19/2,011.02 = 890.27/x
  3. Step 3: Cross multiply
    1,457.19x = 2,011.02 × 890.27
  4. Step 4: Simplify right side
    1,457.19x = 1,790,340.72
  5. Step 5: Solve for x
    x = 1,790,340.72/1,457.19
  6. Step 6: Final answer
    x = 1,228.63

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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.