Home / 9,885.85-13,642.41-5,409.52

Finding the Fourth Proportional to 9,885.85, 13,642.41 and 5,409.52

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Solution

The fourth proportional to 9,885.85, 13,642.41 and 5,409.52 is: 7,465.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,885.85 : 13,642.41 = 5,409.52 : x
  2. Step 2: Convert to fraction form
    9,885.85/13,642.41 = 5,409.52/x
  3. Step 3: Cross multiply
    9,885.85x = 13,642.41 × 5,409.52
  4. Step 4: Simplify right side
    9,885.85x = 73,798,889.74
  5. Step 5: Solve for x
    x = 73,798,889.74/9,885.85
  6. Step 6: Final answer
    x = 7,465.10

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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.