Home / 3,434.10-5,151.15-1,878.90

Finding the Fourth Proportional to 3,434.10, 5,151.15 and 1,878.90

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Solution

The fourth proportional to 3,434.10, 5,151.15 and 1,878.90 is: 2,818.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,434.10 : 5,151.15 = 1,878.90 : x
  2. Step 2: Convert to fraction form
    3,434.10/5,151.15 = 1,878.90/x
  3. Step 3: Cross multiply
    3,434.10x = 5,151.15 × 1,878.90
  4. Step 4: Simplify right side
    3,434.10x = 9,678,495.74
  5. Step 5: Solve for x
    x = 9,678,495.74/3,434.10
  6. Step 6: Final answer
    x = 2,818.35

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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.