Home / 7,438.68-10,265.70-4,455

Finding the Fourth Proportional to 7,438.68, 10,265.70 and 4,455

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Solution

The fourth proportional to 7,438.68, 10,265.70 and 4,455 is: 6,148.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,438.68 : 10,265.70 = 4,455 : x
  2. Step 2: Convert to fraction form
    7,438.68/10,265.70 = 4,455/x
  3. Step 3: Cross multiply
    7,438.68x = 10,265.70 × 4,455
  4. Step 4: Simplify right side
    7,438.68x = 45,733,693.50
  5. Step 5: Solve for x
    x = 45,733,693.50/7,438.68
  6. Step 6: Final answer
    x = 6,148.09

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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.