Home / 2,087.10-3,130.47-626.40

Finding the Fourth Proportional to 2,087.10, 3,130.47 and 626.40

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Solution

The fourth proportional to 2,087.10, 3,130.47 and 626.40 is: 939.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.10 : 3,130.47 = 626.40 : x
  2. Step 2: Convert to fraction form
    2,087.10/3,130.47 = 626.40/x
  3. Step 3: Cross multiply
    2,087.10x = 3,130.47 × 626.40
  4. Step 4: Simplify right side
    2,087.10x = 1,960,926.41
  5. Step 5: Solve for x
    x = 1,960,926.41/2,087.10
  6. Step 6: Final answer
    x = 939.55

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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.