Home / 1,637.16-2,259.18-938.76

Finding the Fourth Proportional to 1,637.16, 2,259.18 and 938.76

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Solution

The fourth proportional to 1,637.16, 2,259.18 and 938.76 is: 1,295.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,637.16 : 2,259.18 = 938.76 : x
  2. Step 2: Convert to fraction form
    1,637.16/2,259.18 = 938.76/x
  3. Step 3: Cross multiply
    1,637.16x = 2,259.18 × 938.76
  4. Step 4: Simplify right side
    1,637.16x = 2,120,827.82
  5. Step 5: Solve for x
    x = 2,120,827.82/1,637.16
  6. Step 6: Final answer
    x = 1,295.43

Related Problems

Find fourth proportional to 818.58, 1,129.59 and 469.38
Half scale
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Double scale
Find fourth proportional to 1,638.16, 2,260.56 and 939.76
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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.