Home / 1,871.19-2,580.72-1,646.64

Finding the Fourth Proportional to 1,871.19, 2,580.72 and 1,646.64

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Solution

The fourth proportional to 1,871.19, 2,580.72 and 1,646.64 is: 2,271.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,871.19 : 2,580.72 = 1,646.64 : x
  2. Step 2: Convert to fraction form
    1,871.19/2,580.72 = 1,646.64/x
  3. Step 3: Cross multiply
    1,871.19x = 2,580.72 × 1,646.64
  4. Step 4: Simplify right side
    1,871.19x = 4,249,516.78
  5. Step 5: Solve for x
    x = 4,249,516.78/1,871.19
  6. Step 6: Final answer
    x = 2,271.02

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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.