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Finding the Fourth Proportional to 7,898.40, 10,899.71 and 4,361.37

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Solution

The fourth proportional to 7,898.40, 10,899.71 and 4,361.37 is: 6,018.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,898.40 : 10,899.71 = 4,361.37 : x
  2. Step 2: Convert to fraction form
    7,898.40/10,899.71 = 4,361.37/x
  3. Step 3: Cross multiply
    7,898.40x = 10,899.71 × 4,361.37
  4. Step 4: Simplify right side
    7,898.40x = 47,537,646.40
  5. Step 5: Solve for x
    x = 47,537,646.40/7,898.40
  6. Step 6: Final answer
    x = 6,018.64

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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.