Home / 7,176.40-9,900.36-4,688.08

Finding the Fourth Proportional to 7,176.40, 9,900.36 and 4,688.08

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Solution

The fourth proportional to 7,176.40, 9,900.36 and 4,688.08 is: 6,467.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,176.40 : 9,900.36 = 4,688.08 : x
  2. Step 2: Convert to fraction form
    7,176.40/9,900.36 = 4,688.08/x
  3. Step 3: Cross multiply
    7,176.40x = 9,900.36 × 4,688.08
  4. Step 4: Simplify right side
    7,176.40x = 46,413,679.71
  5. Step 5: Solve for x
    x = 46,413,679.71/7,176.40
  6. Step 6: Final answer
    x = 6,467.54

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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.