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Finding the Fourth Proportional to 9,370.66, 12,927.45 and 5,642.50

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Solution

The fourth proportional to 9,370.66, 12,927.45 and 5,642.50 is: 7,784.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,370.66 : 12,927.45 = 5,642.50 : x
  2. Step 2: Convert to fraction form
    9,370.66/12,927.45 = 5,642.50/x
  3. Step 3: Cross multiply
    9,370.66x = 12,927.45 × 5,642.50
  4. Step 4: Simplify right side
    9,370.66x = 72,943,136.63
  5. Step 5: Solve for x
    x = 72,943,136.63/9,370.66
  6. Step 6: Final answer
    x = 7,784.20

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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.