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Finding the Fourth Proportional to 7,518.65, 10,368.88 and 6,456.08

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Solution

The fourth proportional to 7,518.65, 10,368.88 and 6,456.08 is: 8,903.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,518.65 : 10,368.88 = 6,456.08 : x
  2. Step 2: Convert to fraction form
    7,518.65/10,368.88 = 6,456.08/x
  3. Step 3: Cross multiply
    7,518.65x = 10,368.88 × 6,456.08
  4. Step 4: Simplify right side
    7,518.65x = 66,942,328.57
  5. Step 5: Solve for x
    x = 66,942,328.57/7,518.65
  6. Step 6: Final answer
    x = 8,903.51

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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.