Home / 5,436.80-8,176.80-4,875.20

Finding the Fourth Proportional to 5,436.80, 8,176.80 and 4,875.20

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Solution

The fourth proportional to 5,436.80, 8,176.80 and 4,875.20 is: 7,332.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,436.80 : 8,176.80 = 4,875.20 : x
  2. Step 2: Convert to fraction form
    5,436.80/8,176.80 = 4,875.20/x
  3. Step 3: Cross multiply
    5,436.80x = 8,176.80 × 4,875.20
  4. Step 4: Simplify right side
    5,436.80x = 39,863,535.36
  5. Step 5: Solve for x
    x = 39,863,535.36/5,436.80
  6. Step 6: Final answer
    x = 7,332.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.