Home / 8,685.12-13,030.44-2,840.40

Finding the Fourth Proportional to 8,685.12, 13,030.44 and 2,840.40

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Solution

The fourth proportional to 8,685.12, 13,030.44 and 2,840.40 is: 4,261.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.12 : 13,030.44 = 2,840.40 : x
  2. Step 2: Convert to fraction form
    8,685.12/13,030.44 = 2,840.40/x
  3. Step 3: Cross multiply
    8,685.12x = 13,030.44 × 2,840.40
  4. Step 4: Simplify right side
    8,685.12x = 37,011,661.78
  5. Step 5: Solve for x
    x = 37,011,661.78/8,685.12
  6. Step 6: Final answer
    x = 4,261.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.