Home / 1,515.12-2,090.90-925.58

Finding the Fourth Proportional to 1,515.12, 2,090.90 and 925.58

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Solution

The fourth proportional to 1,515.12, 2,090.90 and 925.58 is: 1,277.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.12 : 2,090.90 = 925.58 : x
  2. Step 2: Convert to fraction form
    1,515.12/2,090.90 = 925.58/x
  3. Step 3: Cross multiply
    1,515.12x = 2,090.90 × 925.58
  4. Step 4: Simplify right side
    1,515.12x = 1,935,295.22
  5. Step 5: Solve for x
    x = 1,935,295.22/1,515.12
  6. Step 6: Final answer
    x = 1,277.32

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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.