Home / 2,087.18-3,130.65-1,424.30

Finding the Fourth Proportional to 2,087.18, 3,130.65 and 1,424.30

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Solution

The fourth proportional to 2,087.18, 3,130.65 and 1,424.30 is: 2,136.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.18 : 3,130.65 = 1,424.30 : x
  2. Step 2: Convert to fraction form
    2,087.18/3,130.65 = 1,424.30/x
  3. Step 3: Cross multiply
    2,087.18x = 3,130.65 × 1,424.30
  4. Step 4: Simplify right side
    2,087.18x = 4,458,984.80
  5. Step 5: Solve for x
    x = 4,458,984.80/2,087.18
  6. Step 6: Final answer
    x = 2,136.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.