Home / 1,515.20-2,090.04-1,017.65

Finding the Fourth Proportional to 1,515.20, 2,090.04 and 1,017.65

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Solution

The fourth proportional to 1,515.20, 2,090.04 and 1,017.65 is: 1,403.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.20 : 2,090.04 = 1,017.65 : x
  2. Step 2: Convert to fraction form
    1,515.20/2,090.04 = 1,017.65/x
  3. Step 3: Cross multiply
    1,515.20x = 2,090.04 × 1,017.65
  4. Step 4: Simplify right side
    1,515.20x = 2,126,918.76
  5. Step 5: Solve for x
    x = 2,126,918.76/1,515.20
  6. Step 6: Final answer
    x = 1,403.73

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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.