Home / 7,513.60-10,348.80-6,515.20

Finding the Fourth Proportional to 7,513.60, 10,348.80 and 6,515.20

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Solution

The fourth proportional to 7,513.60, 10,348.80 and 6,515.20 is: 8,973.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,513.60 : 10,348.80 = 6,515.20 : x
  2. Step 2: Convert to fraction form
    7,513.60/10,348.80 = 6,515.20/x
  3. Step 3: Cross multiply
    7,513.60x = 10,348.80 × 6,515.20
  4. Step 4: Simplify right side
    7,513.60x = 67,424,501.76
  5. Step 5: Solve for x
    x = 67,424,501.76/7,513.60
  6. Step 6: Final answer
    x = 8,973.66

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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.