Home / 9,415.04-12,988.65-5,435.30

Finding the Fourth Proportional to 9,415.04, 12,988.65 and 5,435.30

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Solution

The fourth proportional to 9,415.04, 12,988.65 and 5,435.30 is: 7,498.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,415.04 : 12,988.65 = 5,435.30 : x
  2. Step 2: Convert to fraction form
    9,415.04/12,988.65 = 5,435.30/x
  3. Step 3: Cross multiply
    9,415.04x = 12,988.65 × 5,435.30
  4. Step 4: Simplify right side
    9,415.04x = 70,597,262.20
  5. Step 5: Solve for x
    x = 70,597,262.20/9,415.04
  6. Step 6: Final answer
    x = 7,498.35

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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.