Home / 2,987.45-4,483.08-1,256.07

Finding the Fourth Proportional to 2,987.45, 4,483.08 and 1,256.07

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Solution

The fourth proportional to 2,987.45, 4,483.08 and 1,256.07 is: 1,884.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.45 : 4,483.08 = 1,256.07 : x
  2. Step 2: Convert to fraction form
    2,987.45/4,483.08 = 1,256.07/x
  3. Step 3: Cross multiply
    2,987.45x = 4,483.08 × 1,256.07
  4. Step 4: Simplify right side
    2,987.45x = 5,631,062.30
  5. Step 5: Solve for x
    x = 5,631,062.30/2,987.45
  6. Step 6: Final answer
    x = 1,884.91

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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.