Home / 7,215.50-10,818.58-4,742.82

Finding the Fourth Proportional to 7,215.50, 10,818.58 and 4,742.82

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Solution

The fourth proportional to 7,215.50, 10,818.58 and 4,742.82 is: 7,111.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.50 : 10,818.58 = 4,742.82 : x
  2. Step 2: Convert to fraction form
    7,215.50/10,818.58 = 4,742.82/x
  3. Step 3: Cross multiply
    7,215.50x = 10,818.58 × 4,742.82
  4. Step 4: Simplify right side
    7,215.50x = 51,310,574.63
  5. Step 5: Solve for x
    x = 51,310,574.63/7,215.50
  6. Step 6: Final answer
    x = 7,111.16

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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.