Home / 1,646.89-2,271.36-1,071.79

Finding the Fourth Proportional to 1,646.89, 2,271.36 and 1,071.79

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Solution

The fourth proportional to 1,646.89, 2,271.36 and 1,071.79 is: 1,478.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,646.89 : 2,271.36 = 1,071.79 : x
  2. Step 2: Convert to fraction form
    1,646.89/2,271.36 = 1,071.79/x
  3. Step 3: Cross multiply
    1,646.89x = 2,271.36 × 1,071.79
  4. Step 4: Simplify right side
    1,646.89x = 2,434,420.93
  5. Step 5: Solve for x
    x = 2,434,420.93/1,646.89
  6. Step 6: Final answer
    x = 1,478.19

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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.