Home / 1,721.12-2,581.67-535.17

Finding the Fourth Proportional to 1,721.12, 2,581.67 and 535.17

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Solution

The fourth proportional to 1,721.12, 2,581.67 and 535.17 is: 802.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.12 : 2,581.67 = 535.17 : x
  2. Step 2: Convert to fraction form
    1,721.12/2,581.67 = 535.17/x
  3. Step 3: Cross multiply
    1,721.12x = 2,581.67 × 535.17
  4. Step 4: Simplify right side
    1,721.12x = 1,381,643.35
  5. Step 5: Solve for x
    x = 1,381,643.35/1,721.12
  6. Step 6: Final answer
    x = 802.76

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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.