Home / 1,748.15-2,621.71-515.33

Finding the Fourth Proportional to 1,748.15, 2,621.71 and 515.33

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Solution

The fourth proportional to 1,748.15, 2,621.71 and 515.33 is: 772.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,748.15 : 2,621.71 = 515.33 : x
  2. Step 2: Convert to fraction form
    1,748.15/2,621.71 = 515.33/x
  3. Step 3: Cross multiply
    1,748.15x = 2,621.71 × 515.33
  4. Step 4: Simplify right side
    1,748.15x = 1,351,030.13
  5. Step 5: Solve for x
    x = 1,351,030.13/1,748.15
  6. Step 6: Final answer
    x = 772.84

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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.