Home / 2,377.36-3,280.80-1,329.40

Finding the Fourth Proportional to 2,377.36, 3,280.80 and 1,329.40

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Solution

The fourth proportional to 2,377.36, 3,280.80 and 1,329.40 is: 1,834.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,377.36 : 3,280.80 = 1,329.40 : x
  2. Step 2: Convert to fraction form
    2,377.36/3,280.80 = 1,329.40/x
  3. Step 3: Cross multiply
    2,377.36x = 3,280.80 × 1,329.40
  4. Step 4: Simplify right side
    2,377.36x = 4,361,495.52
  5. Step 5: Solve for x
    x = 4,361,495.52/2,377.36
  6. Step 6: Final answer
    x = 1,834.60

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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.