Home / 9,138.42-13,707.63-2,898.45

Finding the Fourth Proportional to 9,138.42, 13,707.63 and 2,898.45

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Solution

The fourth proportional to 9,138.42, 13,707.63 and 2,898.45 is: 4,347.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.42 : 13,707.63 = 2,898.45 : x
  2. Step 2: Convert to fraction form
    9,138.42/13,707.63 = 2,898.45/x
  3. Step 3: Cross multiply
    9,138.42x = 13,707.63 × 2,898.45
  4. Step 4: Simplify right side
    9,138.42x = 39,730,880.17
  5. Step 5: Solve for x
    x = 39,730,880.17/9,138.42
  6. Step 6: Final answer
    x = 4,347.68

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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.