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Finding the Fourth Proportional to 4,985.62, 7,476.80 and 1,653.23

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Solution

The fourth proportional to 4,985.62, 7,476.80 and 1,653.23 is: 2,479.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.62 : 7,476.80 = 1,653.23 : x
  2. Step 2: Convert to fraction form
    4,985.62/7,476.80 = 1,653.23/x
  3. Step 3: Cross multiply
    4,985.62x = 7,476.80 × 1,653.23
  4. Step 4: Simplify right side
    4,985.62x = 12,360,880.49
  5. Step 5: Solve for x
    x = 12,360,880.49/4,985.62
  6. Step 6: Final answer
    x = 2,479.31

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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.