Home / 8,386.02-12,569.40-4,689.90

Finding the Fourth Proportional to 8,386.02, 12,569.40 and 4,689.90

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Solution

The fourth proportional to 8,386.02, 12,569.40 and 4,689.90 is: 7,029.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,386.02 : 12,569.40 = 4,689.90 : x
  2. Step 2: Convert to fraction form
    8,386.02/12,569.40 = 4,689.90/x
  3. Step 3: Cross multiply
    8,386.02x = 12,569.40 × 4,689.90
  4. Step 4: Simplify right side
    8,386.02x = 58,949,229.06
  5. Step 5: Solve for x
    x = 58,949,229.06/8,386.02
  6. Step 6: Final answer
    x = 7,029.46

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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.