Home / 2,888.00-3,985.45-1,561.71

Finding the Fourth Proportional to 2,888.00, 3,985.45 and 1,561.71

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Solution

The fourth proportional to 2,888.00, 3,985.45 and 1,561.71 is: 2,155.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,888.00 : 3,985.45 = 1,561.71 : x
  2. Step 2: Convert to fraction form
    2,888.00/3,985.45 = 1,561.71/x
  3. Step 3: Cross multiply
    2,888.00x = 3,985.45 × 1,561.71
  4. Step 4: Simplify right side
    2,888.00x = 6,224,118.66
  5. Step 5: Solve for x
    x = 6,224,118.66/2,888.00
  6. Step 6: Final answer
    x = 2,155.17

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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.