Home / 8,730.47-12,038.73-6,488.66

Finding the Fourth Proportional to 8,730.47, 12,038.73 and 6,488.66

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Solution

The fourth proportional to 8,730.47, 12,038.73 and 6,488.66 is: 8,947.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,730.47 : 12,038.73 = 6,488.66 : x
  2. Step 2: Convert to fraction form
    8,730.47/12,038.73 = 6,488.66/x
  3. Step 3: Cross multiply
    8,730.47x = 12,038.73 × 6,488.66
  4. Step 4: Simplify right side
    8,730.47x = 78,115,165.61
  5. Step 5: Solve for x
    x = 78,115,165.61/8,730.47
  6. Step 6: Final answer
    x = 8,947.42

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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.