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Finding the Fourth Proportional to 8,984.79, 12,386.93 and 6,292.40

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Solution

The fourth proportional to 8,984.79, 12,386.93 and 6,292.40 is: 8,675.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,984.79 : 12,386.93 = 6,292.40 : x
  2. Step 2: Convert to fraction form
    8,984.79/12,386.93 = 6,292.40/x
  3. Step 3: Cross multiply
    8,984.79x = 12,386.93 × 6,292.40
  4. Step 4: Simplify right side
    8,984.79x = 77,943,424.94
  5. Step 5: Solve for x
    x = 77,943,424.94/8,984.79
  6. Step 6: Final answer
    x = 8,675.04

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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.