Home / 9,127.78-13,688.93-4,742.84

Finding the Fourth Proportional to 9,127.78, 13,688.93 and 4,742.84

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Solution

The fourth proportional to 9,127.78, 13,688.93 and 4,742.84 is: 7,112.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,127.78 : 13,688.93 = 4,742.84 : x
  2. Step 2: Convert to fraction form
    9,127.78/13,688.93 = 4,742.84/x
  3. Step 3: Cross multiply
    9,127.78x = 13,688.93 × 4,742.84
  4. Step 4: Simplify right side
    9,127.78x = 64,924,381.05
  5. Step 5: Solve for x
    x = 64,924,381.05/9,127.78
  6. Step 6: Final answer
    x = 7,112.84

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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.