Home / 9,357.04-12,911.12-5,378.32

Finding the Fourth Proportional to 9,357.04, 12,911.12 and 5,378.32

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Solution

The fourth proportional to 9,357.04, 12,911.12 and 5,378.32 is: 7,421.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,357.04 : 12,911.12 = 5,378.32 : x
  2. Step 2: Convert to fraction form
    9,357.04/12,911.12 = 5,378.32/x
  3. Step 3: Cross multiply
    9,357.04x = 12,911.12 × 5,378.32
  4. Step 4: Simplify right side
    9,357.04x = 69,440,134.92
  5. Step 5: Solve for x
    x = 69,440,134.92/9,357.04
  6. Step 6: Final answer
    x = 7,421.16

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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.