Home / 1,864.40-2,795.28-768.48

Finding the Fourth Proportional to 1,864.40, 2,795.28 and 768.48

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Solution

The fourth proportional to 1,864.40, 2,795.28 and 768.48 is: 1,152.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,864.40 : 2,795.28 = 768.48 : x
  2. Step 2: Convert to fraction form
    1,864.40/2,795.28 = 768.48/x
  3. Step 3: Cross multiply
    1,864.40x = 2,795.28 × 768.48
  4. Step 4: Simplify right side
    1,864.40x = 2,148,116.77
  5. Step 5: Solve for x
    x = 2,148,116.77/1,864.40
  6. Step 6: Final answer
    x = 1,152.18

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1.5x scale

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.