Home / 5,118.81-7,638.28-4,567.20

Finding the Fourth Proportional to 5,118.81, 7,638.28 and 4,567.20

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Solution

The fourth proportional to 5,118.81, 7,638.28 and 4,567.20 is: 6,815.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.81 : 7,638.28 = 4,567.20 : x
  2. Step 2: Convert to fraction form
    5,118.81/7,638.28 = 4,567.20/x
  3. Step 3: Cross multiply
    5,118.81x = 7,638.28 × 4,567.20
  4. Step 4: Simplify right side
    5,118.81x = 34,885,552.42
  5. Step 5: Solve for x
    x = 34,885,552.42/5,118.81
  6. Step 6: Final answer
    x = 6,815.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.