Home / 1,386.02-2,079.63-953.88

Finding the Fourth Proportional to 1,386.02, 2,079.63 and 953.88

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Solution

The fourth proportional to 1,386.02, 2,079.63 and 953.88 is: 1,431.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386.02 : 2,079.63 = 953.88 : x
  2. Step 2: Convert to fraction form
    1,386.02/2,079.63 = 953.88/x
  3. Step 3: Cross multiply
    1,386.02x = 2,079.63 × 953.88
  4. Step 4: Simplify right side
    1,386.02x = 1,983,717.46
  5. Step 5: Solve for x
    x = 1,983,717.46/1,386.02
  6. Step 6: Final answer
    x = 1,431.24

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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.