Home / 2,115.02-2,918.77-1,230.81

Finding the Fourth Proportional to 2,115.02, 2,918.77 and 1,230.81

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Solution

The fourth proportional to 2,115.02, 2,918.77 and 1,230.81 is: 1,698.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.02 : 2,918.77 = 1,230.81 : x
  2. Step 2: Convert to fraction form
    2,115.02/2,918.77 = 1,230.81/x
  3. Step 3: Cross multiply
    2,115.02x = 2,918.77 × 1,230.81
  4. Step 4: Simplify right side
    2,115.02x = 3,592,437.28
  5. Step 5: Solve for x
    x = 3,592,437.28/2,115.02
  6. Step 6: Final answer
    x = 1,698.53

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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.