Home / 1,931.04-2,656.80-1,668.60

Finding the Fourth Proportional to 1,931.04, 2,656.80 and 1,668.60

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Solution

The fourth proportional to 1,931.04, 2,656.80 and 1,668.60 is: 2,295.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.04 : 2,656.80 = 1,668.60 : x
  2. Step 2: Convert to fraction form
    1,931.04/2,656.80 = 1,668.60/x
  3. Step 3: Cross multiply
    1,931.04x = 2,656.80 × 1,668.60
  4. Step 4: Simplify right side
    1,931.04x = 4,433,136.48
  5. Step 5: Solve for x
    x = 4,433,136.48/1,931.04
  6. Step 6: Final answer
    x = 2,295.72

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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.