Home / 2,798.49-3,861.40-1,587.17

Finding the Fourth Proportional to 2,798.49, 3,861.40 and 1,587.17

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Solution

The fourth proportional to 2,798.49, 3,861.40 and 1,587.17 is: 2,190.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,798.49 : 3,861.40 = 1,587.17 : x
  2. Step 2: Convert to fraction form
    2,798.49/3,861.40 = 1,587.17/x
  3. Step 3: Cross multiply
    2,798.49x = 3,861.40 × 1,587.17
  4. Step 4: Simplify right side
    2,798.49x = 6,128,698.24
  5. Step 5: Solve for x
    x = 6,128,698.24/2,798.49
  6. Step 6: Final answer
    x = 2,190.00

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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.