Home / 1,644.70-2,271.28-1,407.26

Finding the Fourth Proportional to 1,644.70, 2,271.28 and 1,407.26

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Solution

The fourth proportional to 1,644.70, 2,271.28 and 1,407.26 is: 1,943.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.70 : 2,271.28 = 1,407.26 : x
  2. Step 2: Convert to fraction form
    1,644.70/2,271.28 = 1,407.26/x
  3. Step 3: Cross multiply
    1,644.70x = 2,271.28 × 1,407.26
  4. Step 4: Simplify right side
    1,644.70x = 3,196,270.17
  5. Step 5: Solve for x
    x = 3,196,270.17/1,644.70
  6. Step 6: Final answer
    x = 1,943.38

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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.