Home / 9,688.40-13,368.92-5,438.92

Finding the Fourth Proportional to 9,688.40, 13,368.92 and 5,438.92

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Solution

The fourth proportional to 9,688.40, 13,368.92 and 5,438.92 is: 7,505.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,688.40 : 13,368.92 = 5,438.92 : x
  2. Step 2: Convert to fraction form
    9,688.40/13,368.92 = 5,438.92/x
  3. Step 3: Cross multiply
    9,688.40x = 13,368.92 × 5,438.92
  4. Step 4: Simplify right side
    9,688.40x = 72,712,486.37
  5. Step 5: Solve for x
    x = 72,712,486.37/9,688.40
  6. Step 6: Final answer
    x = 7,505.11

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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.