Home / 1,432.29-1,976.57-802.85

Finding the Fourth Proportional to 1,432.29, 1,976.57 and 802.85

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Solution

The fourth proportional to 1,432.29, 1,976.57 and 802.85 is: 1,107.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.29 : 1,976.57 = 802.85 : x
  2. Step 2: Convert to fraction form
    1,432.29/1,976.57 = 802.85/x
  3. Step 3: Cross multiply
    1,432.29x = 1,976.57 × 802.85
  4. Step 4: Simplify right side
    1,432.29x = 1,586,875.33
  5. Step 5: Solve for x
    x = 1,586,875.33/1,432.29
  6. Step 6: Final answer
    x = 1,107.93

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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.