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Finding the Fourth Proportional to 7,615.63, 10,509.51 and 4,258.45

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Solution

The fourth proportional to 7,615.63, 10,509.51 and 4,258.45 is: 5,876.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,615.63 : 10,509.51 = 4,258.45 : x
  2. Step 2: Convert to fraction form
    7,615.63/10,509.51 = 4,258.45/x
  3. Step 3: Cross multiply
    7,615.63x = 10,509.51 × 4,258.45
  4. Step 4: Simplify right side
    7,615.63x = 44,754,222.86
  5. Step 5: Solve for x
    x = 44,754,222.86/7,615.63
  6. Step 6: Final answer
    x = 5,876.63

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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.