Home / 3,136.80-4,328.67-1,810.71

Finding the Fourth Proportional to 3,136.80, 4,328.67 and 1,810.71

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Solution

The fourth proportional to 3,136.80, 4,328.67 and 1,810.71 is: 2,498.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.80 : 4,328.67 = 1,810.71 : x
  2. Step 2: Convert to fraction form
    3,136.80/4,328.67 = 1,810.71/x
  3. Step 3: Cross multiply
    3,136.80x = 4,328.67 × 1,810.71
  4. Step 4: Simplify right side
    3,136.80x = 7,837,966.06
  5. Step 5: Solve for x
    x = 7,837,966.06/3,136.80
  6. Step 6: Final answer
    x = 2,498.71

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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.