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Finding the Fourth Proportional to 10,862.40, 14,990.04 and 6,146.58

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Solution

The fourth proportional to 10,862.40, 14,990.04 and 6,146.58 is: 8,482.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,862.40 : 14,990.04 = 6,146.58 : x
  2. Step 2: Convert to fraction form
    10,862.40/14,990.04 = 6,146.58/x
  3. Step 3: Cross multiply
    10,862.40x = 14,990.04 × 6,146.58
  4. Step 4: Simplify right side
    10,862.40x = 92,137,480.06
  5. Step 5: Solve for x
    x = 92,137,480.06/10,862.40
  6. Step 6: Final answer
    x = 8,482.24

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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.