Home / 4,678.08-7,017.20-1,215.20

Finding the Fourth Proportional to 4,678.08, 7,017.20 and 1,215.20

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Solution

The fourth proportional to 4,678.08, 7,017.20 and 1,215.20 is: 1,822.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.08 : 7,017.20 = 1,215.20 : x
  2. Step 2: Convert to fraction form
    4,678.08/7,017.20 = 1,215.20/x
  3. Step 3: Cross multiply
    4,678.08x = 7,017.20 × 1,215.20
  4. Step 4: Simplify right side
    4,678.08x = 8,527,301.44
  5. Step 5: Solve for x
    x = 8,527,301.44/4,678.08
  6. Step 6: Final answer
    x = 1,822.82

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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.