Home / 7,615.64-10,510.89-4,430.78

Finding the Fourth Proportional to 7,615.64, 10,510.89 and 4,430.78

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Solution

The fourth proportional to 7,615.64, 10,510.89 and 4,430.78 is: 6,115.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,615.64 : 10,510.89 = 4,430.78 : x
  2. Step 2: Convert to fraction form
    7,615.64/10,510.89 = 4,430.78/x
  3. Step 3: Cross multiply
    7,615.64x = 10,510.89 × 4,430.78
  4. Step 4: Simplify right side
    7,615.64x = 46,571,419.04
  5. Step 5: Solve for x
    x = 46,571,419.04/7,615.64
  6. Step 6: Final answer
    x = 6,115.23

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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.