Home / 7,347.16-10,139.02-3,990.06

Finding the Fourth Proportional to 7,347.16, 10,139.02 and 3,990.06

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Solution

The fourth proportional to 7,347.16, 10,139.02 and 3,990.06 is: 5,506.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,347.16 : 10,139.02 = 3,990.06 : x
  2. Step 2: Convert to fraction form
    7,347.16/10,139.02 = 3,990.06/x
  3. Step 3: Cross multiply
    7,347.16x = 10,139.02 × 3,990.06
  4. Step 4: Simplify right side
    7,347.16x = 40,455,298.14
  5. Step 5: Solve for x
    x = 40,455,298.14/7,347.16
  6. Step 6: Final answer
    x = 5,506.25

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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.