Home / 5,389.95-7,438.78-3,031.64

Finding the Fourth Proportional to 5,389.95, 7,438.78 and 3,031.64

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Solution

The fourth proportional to 5,389.95, 7,438.78 and 3,031.64 is: 4,184.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,389.95 : 7,438.78 = 3,031.64 : x
  2. Step 2: Convert to fraction form
    5,389.95/7,438.78 = 3,031.64/x
  3. Step 3: Cross multiply
    5,389.95x = 7,438.78 × 3,031.64
  4. Step 4: Simplify right side
    5,389.95x = 22,551,703.00
  5. Step 5: Solve for x
    x = 22,551,703.00/5,389.95
  6. Step 6: Final answer
    x = 4,184.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.