Home / 7,665.48-10,574.81-4,478.91

Finding the Fourth Proportional to 7,665.48, 10,574.81 and 4,478.91

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Solution

The fourth proportional to 7,665.48, 10,574.81 and 4,478.91 is: 6,178.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,665.48 : 10,574.81 = 4,478.91 : x
  2. Step 2: Convert to fraction form
    7,665.48/10,574.81 = 4,478.91/x
  3. Step 3: Cross multiply
    7,665.48x = 10,574.81 × 4,478.91
  4. Step 4: Simplify right side
    7,665.48x = 47,363,584.39
  5. Step 5: Solve for x
    x = 47,363,584.39/7,665.48
  6. Step 6: Final answer
    x = 6,178.82

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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.