Home / 7,154.28-9,871.04-4,319.40

Finding the Fourth Proportional to 7,154.28, 9,871.04 and 4,319.40

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Solution

The fourth proportional to 7,154.28, 9,871.04 and 4,319.40 is: 5,959.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,154.28 : 9,871.04 = 4,319.40 : x
  2. Step 2: Convert to fraction form
    7,154.28/9,871.04 = 4,319.40/x
  3. Step 3: Cross multiply
    7,154.28x = 9,871.04 × 4,319.40
  4. Step 4: Simplify right side
    7,154.28x = 42,636,970.18
  5. Step 5: Solve for x
    x = 42,636,970.18/7,154.28
  6. Step 6: Final answer
    x = 5,959.65

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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.