Home / 1,913.58-2,640.90-1,074.34

Finding the Fourth Proportional to 1,913.58, 2,640.90 and 1,074.34

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Solution

The fourth proportional to 1,913.58, 2,640.90 and 1,074.34 is: 1,482.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.58 : 2,640.90 = 1,074.34 : x
  2. Step 2: Convert to fraction form
    1,913.58/2,640.90 = 1,074.34/x
  3. Step 3: Cross multiply
    1,913.58x = 2,640.90 × 1,074.34
  4. Step 4: Simplify right side
    1,913.58x = 2,837,228.27
  5. Step 5: Solve for x
    x = 2,837,228.27/1,913.58
  6. Step 6: Final answer
    x = 1,482.68

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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.