Home / 9,140.50-12,621.02-7,012.65

Finding the Fourth Proportional to 9,140.50, 12,621.02 and 7,012.65

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Solution

The fourth proportional to 9,140.50, 12,621.02 and 7,012.65 is: 9,682.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,140.50 : 12,621.02 = 7,012.65 : x
  2. Step 2: Convert to fraction form
    9,140.50/12,621.02 = 7,012.65/x
  3. Step 3: Cross multiply
    9,140.50x = 12,621.02 × 7,012.65
  4. Step 4: Simplify right side
    9,140.50x = 88,506,795.90
  5. Step 5: Solve for x
    x = 88,506,795.90/9,140.50
  6. Step 6: Final answer
    x = 9,682.93

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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.