Home / 1,543.63-2,130.27-845.01

Finding the Fourth Proportional to 1,543.63, 2,130.27 and 845.01

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Solution

The fourth proportional to 1,543.63, 2,130.27 and 845.01 is: 1,166.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.63 : 2,130.27 = 845.01 : x
  2. Step 2: Convert to fraction form
    1,543.63/2,130.27 = 845.01/x
  3. Step 3: Cross multiply
    1,543.63x = 2,130.27 × 845.01
  4. Step 4: Simplify right side
    1,543.63x = 1,800,088.80
  5. Step 5: Solve for x
    x = 1,800,088.80/1,543.63
  6. Step 6: Final answer
    x = 1,166.14

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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.